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Finding the Fourth Proportional to 8,252.43, 12,355.05 and 7,728.70

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Solution

The fourth proportional to 8,252.43, 12,355.05 and 7,728.70 is: 11,570.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,252.43 : 12,355.05 = 7,728.70 : x
  2. Step 2: Convert to fraction form
    8,252.43/12,355.05 = 7,728.70/x
  3. Step 3: Cross multiply
    8,252.43x = 12,355.05 × 7,728.70
  4. Step 4: Simplify right side
    8,252.43x = 95,488,452.72
  5. Step 5: Solve for x
    x = 95,488,452.72/8,252.43
  6. Step 6: Final answer
    x = 11,570.95

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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.