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Finding the Fourth Proportional to 8,979.65, 13,471.87 and 7,401.26

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Solution

The fourth proportional to 8,979.65, 13,471.87 and 7,401.26 is: 11,103.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.65 : 13,471.87 = 7,401.26 : x
  2. Step 2: Convert to fraction form
    8,979.65/13,471.87 = 7,401.26/x
  3. Step 3: Cross multiply
    8,979.65x = 13,471.87 × 7,401.26
  4. Step 4: Simplify right side
    8,979.65x = 99,708,726.69
  5. Step 5: Solve for x
    x = 99,708,726.69/8,979.65
  6. Step 6: Final answer
    x = 11,103.85

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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.