Question

If one term of a proportion is not known, what can be used to find the value of that term?

a substitution
c. cross-multiplication
b. graphing
d. adding all the numbers together
Please select the best answer from the choices provided

Answer 1

cross multiplication would be the answer i would chose. if you have x/2 and then 3/5 you would multiply 5*x and 2*3 and eventually solve for x.