The Richter scale is logarithmic, which means that for every one-unit increase in magnitude, the energy released by the earthquake increases by a factor of 10.
To calculate how many times more intense earthquake A was than earthquake B, we need to find the difference in their magnitudes and then raise 10 to that power.
The difference in magnitudes is:
8.2 - 4.6 = 3.6
To find how many times more intense earthquake A was than earthquake B, we need to raise 10 to the power of 3.6:
10^3.6 = 3981.07
Therefore, earthquake A was approximately 3981.07 times more intense than earthquake B. Rounded to two decimal places, the answer is 3981.07.