F5 - Ratio mode/Weight Calculation

server1: ratio = 7

server2: ratio = 5

server3: ratio = 3

server4: ratio = 2

7 + 5 + 3 + 2 = 17

7 / 17 * 100 = 41.18% of traffic

5 / 17 * 100 = 29.41% of traffic

3 / 17 * 100 = 17.65% of traffic

2 / 17 * 100 = 11.76% of traffic

total========= 100% of traffic

I know i'm late to the party, but I hope this help others...