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Finding the Fourth Proportional to 8,567.10, 12,850.65 and 7,659.90

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Solution

The fourth proportional to 8,567.10, 12,850.65 and 7,659.90 is: 11,489.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,567.10 : 12,850.65 = 7,659.90 : x
  2. Step 2: Convert to fraction form
    8,567.10/12,850.65 = 7,659.90/x
  3. Step 3: Cross multiply
    8,567.10x = 12,850.65 × 7,659.90
  4. Step 4: Simplify right side
    8,567.10x = 98,434,693.94
  5. Step 5: Solve for x
    x = 98,434,693.94/8,567.10
  6. Step 6: Final answer
    x = 11,489.85

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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.