Answer :
Let's take an mathematical example
Let's find the ratio of volume of a cone and cylinder if radius and height are same for both .
See
- V for cone=1/3πr²h
- V for cylinder=πr²h
The ratio is 1:3
#Example 1
- Gems Ram has=3
- Gems Kane has=4
Ratio of gems=3:4
#Example 2
- Total continents in world=7
- Total oceans in world=5
Ratio of ocean to continents=5:7
Note:-
Two examples are already provided on your another question .You may refer there