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Finding the Fourth Proportional to 8,279.54, 12,424.79 and 3,898.25

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Solution

The fourth proportional to 8,279.54, 12,424.79 and 3,898.25 is: 5,849.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.54 : 12,424.79 = 3,898.25 : x
  2. Step 2: Convert to fraction form
    8,279.54/12,424.79 = 3,898.25/x
  3. Step 3: Cross multiply
    8,279.54x = 12,424.79 × 3,898.25
  4. Step 4: Simplify right side
    8,279.54x = 48,434,949.19
  5. Step 5: Solve for x
    x = 48,434,949.19/8,279.54
  6. Step 6: Final answer
    x = 5,849.95

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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.