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Finding the Fourth Proportional to 6,691.35, 10,033.95 and 3,918.72

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Solution

The fourth proportional to 6,691.35, 10,033.95 and 3,918.72 is: 5,876.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,691.35 : 10,033.95 = 3,918.72 : x
  2. Step 2: Convert to fraction form
    6,691.35/10,033.95 = 3,918.72/x
  3. Step 3: Cross multiply
    6,691.35x = 10,033.95 × 3,918.72
  4. Step 4: Simplify right side
    6,691.35x = 39,320,240.54
  5. Step 5: Solve for x
    x = 39,320,240.54/6,691.35
  6. Step 6: Final answer
    x = 5,876.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.