Find the value of the variable in each proportion.

a) 3:5 = g:65
b) h:8 = 56:64
c) 16:m = 20:35
d) 36:8 = 81:f

3 answers

For the first one

3:5=g:65

3/5=g/65

3×65=5g

g=195/5

g=39

Follow the same procedure for the rest
get 1 on the same side as your unknown variable by multiplying or dividing both sides
eg:
3 / 5 = g / 65
multiply both sides by 65
3 * 65 / 5 = g * 65 /65 = g
3 *13 = g
you have to add