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Finding the Fourth Proportional to 7,924.92, 11,887.52 and 7,443.78

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Solution

The fourth proportional to 7,924.92, 11,887.52 and 7,443.78 is: 11,165.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,924.92 : 11,887.52 = 7,443.78 : x
  2. Step 2: Convert to fraction form
    7,924.92/11,887.52 = 7,443.78/x
  3. Step 3: Cross multiply
    7,924.92x = 11,887.52 × 7,443.78
  4. Step 4: Simplify right side
    7,924.92x = 88,488,083.63
  5. Step 5: Solve for x
    x = 88,488,083.63/7,924.92
  6. Step 6: Final answer
    x = 11,165.80

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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.