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Finding the Fourth Proportional to 8,524.47, 11,779.03 and 6,640.92

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Solution

The fourth proportional to 8,524.47, 11,779.03 and 6,640.92 is: 9,176.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,524.47 : 11,779.03 = 6,640.92 : x
  2. Step 2: Convert to fraction form
    8,524.47/11,779.03 = 6,640.92/x
  3. Step 3: Cross multiply
    8,524.47x = 11,779.03 × 6,640.92
  4. Step 4: Simplify right side
    8,524.47x = 78,223,595.91
  5. Step 5: Solve for x
    x = 78,223,595.91/8,524.47
  6. Step 6: Final answer
    x = 9,176.36

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.