Question

What number must be added to each of the numbers 3, 7, 5, 8 to get the numbers
which are in proportion?

Answer 1

Answer:

1+3 = 4

2+5= 7

2+3= 5

4+4 = 8

Answer 2

Answer:

1+2=3

2+5=7

3+2=5

4+4=8