Finding the Fourth Proportional to 3,903,722.14, 5,387,304.92 and 2,161,391.52
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Solution
The fourth proportional to 3,903,722.14, 5,387,304.92 and 2,161,391.52 is: 2,982,813.52
Step by Step Solution
- Step 1: Write the proportion equation
3,903,722.14 : 5,387,304.92 = 2,161,391.52 : x - Step 2: Convert to fraction form
3,903,722.14/5,387,304.92 = 2,161,391.52/x - Step 3: Cross multiply
3,903,722.14x = 5,387,304.92 × 2,161,391.52 - Step 4: Simplify right side
3,903,722.14x = 11,644,075,169,742.28 - Step 5: Solve for x
x = 11,644,075,169,742.28/3,903,722.14 - Step 6: Final answer
x = 2,982,813.52
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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.