Least to greatest ratio

The ratios of cups of milk to T cocoa powder are:
2 : 3 the total is 2 + 3 = 5
5 : 8 the total is 5 + 8 = 13
3 : 4 the total is 3 + 4 = 7
4 : 7 the total is 4 + 7 = 11
Least to greatest ratio will be represented by least to greatest totals
i.e 5 , 7 , 11 , 13 represents the order of respective issues from least to greatest.
The ratios from least to greatest are:
2 : 3
3 : 4
4 : 7
5 : 8