Ratio of 3 to 4 is 3 : 4. Order: 1 g p.o. The unknown ratio is stated second. Example 1: Ratio and proportion is useful and easy to use in dosage calculation, because it is often necessary to find only one unknown quantity. Total cholesterol: Total cholesterol: HDL - High-Density Lipoproteins: HDL - When converted KG into the number of bags= 72/50=1.44bag. Guidelines to follow when using the proportion calculator Each table has two boxes. /*