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Finding the Fourth Proportional to 8,626.72, 11,906.96 and 8,043.04

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Solution

The fourth proportional to 8,626.72, 11,906.96 and 8,043.04 is: 11,101.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,626.72 : 11,906.96 = 8,043.04 : x
  2. Step 2: Convert to fraction form
    8,626.72/11,906.96 = 8,043.04/x
  3. Step 3: Cross multiply
    8,626.72x = 11,906.96 × 8,043.04
  4. Step 4: Simplify right side
    8,626.72x = 95,768,155.56
  5. Step 5: Solve for x
    x = 95,768,155.56/8,626.72
  6. Step 6: Final answer
    x = 11,101.34

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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.