It is 4000 meters from Kala's house to the nearest mailbox
Step-by-step explanation
we need to convert kilometers into meters
Step 1
remember
1 kilometer = 1000 meters
Let x represent the number of meters in 4 kilometers,so
if

then

as the proportion is the same(

Hence
It is 4000 meters from Kala's house to the nearest mailbox
(tip: to convert from km to meters, just multiply by 1000)
so
4km=4*1000 mt=4000 mt
I hope this helps you