The mandatory jump is from high to low. You can go beyond your "range" if you jump from high to low. It just hurts a bit and leaves you on your knees for a short while. You can see this easily in the very first room by jumping from the ledge to beyond your range line on the floor.
I'm saying that right now with 4.5 meters, most of the destination is not "beyond the range", it says "Too far". If the distance modifier drops, that jump likely won't be allowed. But the solution is to leave the minimum at 4.5.
Even if you can make it, you don't have a lot of HP to spare to take damage, and the next healing station is past some combat. Probably not an insurmountable obstacle, with the autosave, though.
