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Finding the Fourth Proportional to 8,645.92, 12,951.84 and 4,488.64

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Solution

The fourth proportional to 8,645.92, 12,951.84 and 4,488.64 is: 6,724.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,645.92 : 12,951.84 = 4,488.64 : x
  2. Step 2: Convert to fraction form
    8,645.92/12,951.84 = 4,488.64/x
  3. Step 3: Cross multiply
    8,645.92x = 12,951.84 × 4,488.64
  4. Step 4: Simplify right side
    8,645.92x = 58,136,147.10
  5. Step 5: Solve for x
    x = 58,136,147.10/8,645.92
  6. Step 6: Final answer
    x = 6,724.11

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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.