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Finding the Fourth Proportional to 8,502.20, 12,748.90 and 2,657.24

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Solution

The fourth proportional to 8,502.20, 12,748.90 and 2,657.24 is: 3,984.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,502.20 : 12,748.90 = 2,657.24 : x
  2. Step 2: Convert to fraction form
    8,502.20/12,748.90 = 2,657.24/x
  3. Step 3: Cross multiply
    8,502.20x = 12,748.90 × 2,657.24
  4. Step 4: Simplify right side
    8,502.20x = 33,876,887.04
  5. Step 5: Solve for x
    x = 33,876,887.04/8,502.20
  6. Step 6: Final answer
    x = 3,984.48

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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.