Finding the Fourth Proportional to 3,981,380.99, 5,494,239.81 and 2,215,213.09
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Solution
The fourth proportional to 3,981,380.99, 5,494,239.81 and 2,215,213.09 is: 3,056,957.37
Step by Step Solution
- Step 1: Write the proportion equation
3,981,380.99 : 5,494,239.81 = 2,215,213.09 : x - Step 2: Convert to fraction form
3,981,380.99/5,494,239.81 = 2,215,213.09/x - Step 3: Cross multiply
3,981,380.99x = 5,494,239.81 × 2,215,213.09 - Step 4: Simplify right side
3,981,380.99x = 12,170,911,932,975.51 - Step 5: Solve for x
x = 12,170,911,932,975.51/3,981,380.99 - Step 6: Final answer
x = 3,056,957.37
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.