Question

Solve the proportion: 3/x=15/45​

Answer 1

The answer is 9.
Since you cross multiply 3 times 45 which is 135. Then divide 135 by 15

Answer 2

`x = 9`

Explanation:

1 ) Cross-multiply...

`(3)/(x)` ÷
`(15)/(45)`

`3` ×
`45 = 15` ×
`x`

`135=15x`

2 ) Flip the equation...

`15x=135`

3 ) Divide both sides by 15...

`(15x)/(15)` =
`(135)/(15)`

`x = 9`

Hope this helps! :)