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Finding the Fourth Proportional to 8,149.59, 12,218.88 and 3,217.89

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Solution

The fourth proportional to 8,149.59, 12,218.88 and 3,217.89 is: 4,824.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,149.59 : 12,218.88 = 3,217.89 : x
  2. Step 2: Convert to fraction form
    8,149.59/12,218.88 = 3,217.89/x
  3. Step 3: Cross multiply
    8,149.59x = 12,218.88 × 3,217.89
  4. Step 4: Simplify right side
    8,149.59x = 39,319,011.76
  5. Step 5: Solve for x
    x = 39,319,011.76/8,149.59
  6. Step 6: Final answer
    x = 4,824.66

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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.