Question

if y=3.2 when x=1.6,find y when x=19

Answer 1

Y = 38

3.2 / 1.6 = 2
x / 19 = 2
2 x 19 = 38

Answer 2

This is a porportion. 1.6    19
                                 3.2     x
1.6x = 60.8
1.6       1.6
x=38