Your group is stranded

if it was longer maybe it would be different but for 5 days a healthy person can eat nothing at all and be just fine, some people do this voluntarily as an occasional fasting. so that being said, of course give the pregnant lady anything she needs because the baby could be seriously affected if she doesn't eat enough. give the injured person anything they need so they don't die. that leaves 2 fit adults and an adolescent. I'm not sure if "rationned normally" means that the woman and injured guy get what they fully need but lets say it does. lets say they eat 3 meals a day but two get big meals. that means in total there is 18 large meals and 27 regular meals. lets say the pregnant woman is in her second trimester and needs 20% more resources and the same for injured guy. they both need an extra 6 big meals so about 15 regular meals for the both of them. that leaves 12 meals to be split in 3 so the 3 other people would get one regualr meal a day except for the last day where they get nothing.

Rationing will mean the injured member will die, the pregnant lady and the teenager will likely suffer from lack of food or shelter etc fairly quickly.

In order for the majority to survive the injured member must be humanely put to death, not left to suffer and die from resource rationing.

4 people have a good chance of survival that way (5 if you count the baby) versus only 2 people who will likely survive if additional resources are provided to the injured person.

Not a nice choice to make and I hope I never have to make it.

But for real though, i think rations should be split equally but care given to the person injured. Bleeding can be stopped. Things need to be checked on (infection, etc.) The pregnant woman can do this while me or the teenager can go scavenge or spot places of interest depending if the environment is safe. The teenager could also aid with things around the spot we choose as shelter. If we are fucked but know we are getting help in 5 days all we have to do is endure. Make it as comfortable as possible but dont waste time. Be planning and making compromises.

All could live for 7 days without food except the injured party . The important asset is water , which you did not mention .

I need more context to answer this.

Question 1: Is there any access to drinking water, if so, how much?

Question 2: Do we have prepared food or do we have resources around the area, like banana trees?

If the answer is yes on both and it's enough water to last for 5 days to all members then I'd prioritize that we all survive unless someone is a murder pedophile or rapist or rude in the group then I'll kill them and use them as bait to catch a wild animal that we can nom nom.

Remote location? Unless we got stuck in a wasteland, I could find more food.

Essentially, all the food will go towards the member who is pregnant and the one who is injured

The other 3, myself included, can last a lot longer than 5 days without food and it wouldn't even be that big of a deal. My main concern would be water, so I definitely wouldn't be doing anything to strenuous etc that would cause me to lose more than needed

Try to make the food stretch for 5 days.
If there's food for 3 days, then maybe we could eat 2 things for a day, and if we're getting a bit weak, we could always sleep to save energy.

I'd ditch both the pregnant women and the injured person

Eat the teenager. Noone likes em anyway.

Another lifeboat question

Partake in cannibalism