Question

Find the unknown number in the proportion. Reduce your answer to lowest terms. 3/n = 9/11/8

Answer 1

`(3)/(n)=(9)/((11)/(8))`

we can re-write the right-hand side

That is;

`(3)/(n)=9*(8)/(11)`
`(3)/(n)=(72)/(11)`

cross-multiply

`72* n=3*11`

72 n = 33

Divide both-side of the equation by 72

`(72n)/(72)=(33)/(72)`
`n=(33)/(72)`
`n=(11)/(24)`