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Finding the Fourth Proportional to 8,239.14, 12,358.71 and 7,487.46

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Solution

The fourth proportional to 8,239.14, 12,358.71 and 7,487.46 is: 11,231.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,239.14 : 12,358.71 = 7,487.46 : x
  2. Step 2: Convert to fraction form
    8,239.14/12,358.71 = 7,487.46/x
  3. Step 3: Cross multiply
    8,239.14x = 12,358.71 × 7,487.46
  4. Step 4: Simplify right side
    8,239.14x = 92,535,346.78
  5. Step 5: Solve for x
    x = 92,535,346.78/8,239.14
  6. Step 6: Final answer
    x = 11,231.19

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.