Home / 8,279.39-12,420.62-2,732.96

Finding the Fourth Proportional to 8,279.39, 12,420.62 and 2,732.96

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Solution

The fourth proportional to 8,279.39, 12,420.62 and 2,732.96 is: 4,099.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.39 : 12,420.62 = 2,732.96 : x
  2. Step 2: Convert to fraction form
    8,279.39/12,420.62 = 2,732.96/x
  3. Step 3: Cross multiply
    8,279.39x = 12,420.62 × 2,732.96
  4. Step 4: Simplify right side
    8,279.39x = 33,945,043.97
  5. Step 5: Solve for x
    x = 33,945,043.97/8,279.39
  6. Step 6: Final answer
    x = 4,099.95

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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.