Home / 8,972.19-12,381.12-5,614.92

Finding the Fourth Proportional to 8,972.19, 12,381.12 and 5,614.92

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Solution

The fourth proportional to 8,972.19, 12,381.12 and 5,614.92 is: 7,748.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972.19 : 12,381.12 = 5,614.92 : x
  2. Step 2: Convert to fraction form
    8,972.19/12,381.12 = 5,614.92/x
  3. Step 3: Cross multiply
    8,972.19x = 12,381.12 × 5,614.92
  4. Step 4: Simplify right side
    8,972.19x = 69,518,998.31
  5. Step 5: Solve for x
    x = 69,518,998.31/8,972.19
  6. Step 6: Final answer
    x = 7,748.28

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Half scale
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Double scale
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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.