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Finding the Fourth Proportional to 7,691.92, 10,607.88 and 5,038.36

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Solution

The fourth proportional to 7,691.92, 10,607.88 and 5,038.36 is: 6,948.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,691.92 : 10,607.88 = 5,038.36 : x
  2. Step 2: Convert to fraction form
    7,691.92/10,607.88 = 5,038.36/x
  3. Step 3: Cross multiply
    7,691.92x = 10,607.88 × 5,038.36
  4. Step 4: Simplify right side
    7,691.92x = 53,446,318.28
  5. Step 5: Solve for x
    x = 53,446,318.28/7,691.92
  6. Step 6: Final answer
    x = 6,948.37

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1.5x scale

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.