How do you solve the proportion #5/x=10/4#?

2 Answers
Jun 17, 2017

Answer:

#x=2#

Explanation:

This can be solved using cross multiplication. This fraction equation is the same as the following:

#x xx 10=5xx4#

#x xx 10 = 20#

Divide both sides by #10#

#x xx cancel(10)/cancel(10) = 20/10#

#x = 2#

Jun 17, 2017

Answer:

#x=2#

Explanation:

When you have proportions (two fractions equal to each other), cross multiply:
Left Numerator x Right Denominator = Right Numerator x Left Denominator
#5/x=10/4#
#5*4=10*x#

Solve:
#5*4=10*x#
#20=10x#
#x=2#