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Finding the Fourth Proportional to 8,753.67, 13,128.12 and 2,909.52

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Solution

The fourth proportional to 8,753.67, 13,128.12 and 2,909.52 is: 4,363.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,753.67 : 13,128.12 = 2,909.52 : x
  2. Step 2: Convert to fraction form
    8,753.67/13,128.12 = 2,909.52/x
  3. Step 3: Cross multiply
    8,753.67x = 13,128.12 × 2,909.52
  4. Step 4: Simplify right side
    8,753.67x = 38,196,527.70
  5. Step 5: Solve for x
    x = 38,196,527.70/8,753.67
  6. Step 6: Final answer
    x = 4,363.49

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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.