Finding the Fourth Proportional to 5,160,691.47, 7,121,936.97 and 2,837,760.78
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Solution
The fourth proportional to 5,160,691.47, 7,121,936.97 and 2,837,760.78 is: 3,916,210.36
Step by Step Solution
- Step 1: Write the proportion equation
5,160,691.47 : 7,121,936.97 = 2,837,760.78 : x - Step 2: Convert to fraction form
5,160,691.47/7,121,936.97 = 2,837,760.78/x - Step 3: Cross multiply
5,160,691.47x = 7,121,936.97 × 2,837,760.78 - Step 4: Simplify right side
5,160,691.47x = 20,210,353,411,098.04 - Step 5: Solve for x
x = 20,210,353,411,098.04/5,160,691.47 - Step 6: Final answer
x = 3,916,210.36
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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.