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Finding the Fourth Proportional to 8,366.55, 12,549.15 and 2,819.78

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Solution

The fourth proportional to 8,366.55, 12,549.15 and 2,819.78 is: 4,229.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,366.55 : 12,549.15 = 2,819.78 : x
  2. Step 2: Convert to fraction form
    8,366.55/12,549.15 = 2,819.78/x
  3. Step 3: Cross multiply
    8,366.55x = 12,549.15 × 2,819.78
  4. Step 4: Simplify right side
    8,366.55x = 35,385,765.34
  5. Step 5: Solve for x
    x = 35,385,765.34/8,366.55
  6. Step 6: Final answer
    x = 4,229.43

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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.