Question

find the value of x so that x,60,3,20 are in proportion

Answer 1

Hi ,
   x : 60 = 3 : 20
   x * 20 = 60 * 3
   x = 180 / 20
.'.x=9

I hope it was helpful :)

Answer 2

x:60::3:20
x:60=3:20
$\frac{x}{60} = \frac{3}{20} \\ \: \: = > x \times 20 = 3 \times 60 \\ \: \: \: = > 20x = 180 \\ \: \: \: \: = > x = \frac{180}{20} \\ \: \: \: \: \: = > 9 \\ hope \: it \: helps$