Home / 8,691.32-11,996.18-5,711.19

Finding the Fourth Proportional to 8,691.32, 11,996.18 and 5,711.19

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Solution

The fourth proportional to 8,691.32, 11,996.18 and 5,711.19 is: 7,882.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.32 : 11,996.18 = 5,711.19 : x
  2. Step 2: Convert to fraction form
    8,691.32/11,996.18 = 5,711.19/x
  3. Step 3: Cross multiply
    8,691.32x = 11,996.18 × 5,711.19
  4. Step 4: Simplify right side
    8,691.32x = 68,512,434.70
  5. Step 5: Solve for x
    x = 68,512,434.70/8,691.32
  6. Step 6: Final answer
    x = 7,882.86

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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.