what is the waight of 4 month baby... birth time waight is 2.4

A. It should be 4.4 kg after completing the time of four months because basically expect the child to gain at least half a kilo kilogram in a month so if you calculate on that basis it comes out to be 2 kg kilograms and when you added to the birth weight which is 2.4 it is going to turn out to be 4.4