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Finding the Fourth Proportional to 8,340.80, 12,508.16 and 3,660.62

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Solution

The fourth proportional to 8,340.80, 12,508.16 and 3,660.62 is: 5,489.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,340.80 : 12,508.16 = 3,660.62 : x
  2. Step 2: Convert to fraction form
    8,340.80/12,508.16 = 3,660.62/x
  3. Step 3: Cross multiply
    8,340.80x = 12,508.16 × 3,660.62
  4. Step 4: Simplify right side
    8,340.80x = 45,787,539.82
  5. Step 5: Solve for x
    x = 45,787,539.82/8,340.80
  6. Step 6: Final answer
    x = 5,489.59

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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.