I am trying to find gear ratios of gear boxes given the following info:

Installed Power = 11 kW
Absorbed Power = 6 kW
Efficiency = 95%
Power factor = 1.2
Gear ratio = ?

I only know the following equation:
Installed power = Absorbed power X Power factor/Efficiency

Can you by your expertise help me out on this.

Thank you for your time to consider this matter and I look forward to hearing from you.

Kindest regards