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Finding the Fourth Proportional to 8,149.76, 12,224.65 and 3,220.59

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Solution

The fourth proportional to 8,149.76, 12,224.65 and 3,220.59 is: 4,830.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,149.76 : 12,224.65 = 3,220.59 : x
  2. Step 2: Convert to fraction form
    8,149.76/12,224.65 = 3,220.59/x
  3. Step 3: Cross multiply
    8,149.76x = 12,224.65 × 3,220.59
  4. Step 4: Simplify right side
    8,149.76x = 39,370,517.17
  5. Step 5: Solve for x
    x = 39,370,517.17/8,149.76
  6. Step 6: Final answer
    x = 4,830.88

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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.