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Finding the Fourth Proportional to 8,251.79, 12,356.55 and 4,549.91

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Solution

The fourth proportional to 8,251.79, 12,356.55 and 4,549.91 is: 6,813.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,251.79 : 12,356.55 = 4,549.91 : x
  2. Step 2: Convert to fraction form
    8,251.79/12,356.55 = 4,549.91/x
  3. Step 3: Cross multiply
    8,251.79x = 12,356.55 × 4,549.91
  4. Step 4: Simplify right side
    8,251.79x = 56,221,180.76
  5. Step 5: Solve for x
    x = 56,221,180.76/8,251.79
  6. Step 6: Final answer
    x = 6,813.21

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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.