A proportion is the name we give to a statement in which 2 ratios are equal. Proportions are built off of ratios. It is usually written in one of 2 ways. These are with either a colon or a fraction bar. For example... 2/3 = 4/6 has the same meaning as 2:3 = 4:6
The answer was created by two equal fractions. They give us 2 while the extremes are 1 to 4. This tells us that the number 2 is the "mean proportional" between the numbers 1 and 4.
