PROPORTIONS A proportion is an equation of two ratios which can also be expressed as two fractions. Using ratios in proportions When using ratios in a proportion, a double colon serves as a separator. Double colon shows equality between the two ratios. In the example previously given, the ratio of pads with the tablets is 1:20, then 2 pads have 40 tablets. In proportion, it is written as: 1 pad : 20 tablets :: 2 pads : 40 tablets or 1:20 :: 2:40 Go marathon using ratios in proportions! On the second example, there are 5 nurses for every 35 patients and the ratio is 5:35. We can therefore say that there are 10 nurses for 70 patients. In a proportion, we can express the comparison as: 5 nurses : 35 patients :: 10 nurses :: 70 patients or 5:35 :: 10:70 Using fractions in proportions A proportion that can be expressed using ratios can also be expressed using fractions. Let’s refer to the examples given before. 1 pad has 20 tablets which means that 2 pads have 40 tablets. Using fractions, we can write the proportion as: 5/35 10/70 5 nurses Or Enjoy using fractions in proportions There are 5 nurses for every 35 patients which equals to 10 nurses for 70 patients. We can express this in fraction as: