How is the rate of consumption of o2 related to the rate of consumption of nh3?

1) For every 4 mol NH3 consumed, 5 mol of O2 is consumed. The rate is 1.25:1

2) For every 4 mol NH3 consumed 4 mol NO is produced. The rate is 1:1

3) For every 4 mol NH3 consumed, 6 mol H2O is formed. Rate = 1.5:1