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Finding the Fourth Proportional to 8,340.40, 12,508.40 and 2,794.24

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Solution

The fourth proportional to 8,340.40, 12,508.40 and 2,794.24 is: 4,190.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,340.40 : 12,508.40 = 2,794.24 : x
  2. Step 2: Convert to fraction form
    8,340.40/12,508.40 = 2,794.24/x
  3. Step 3: Cross multiply
    8,340.40x = 12,508.40 × 2,794.24
  4. Step 4: Simplify right side
    8,340.40x = 34,951,471.62
  5. Step 5: Solve for x
    x = 34,951,471.62/8,340.40
  6. Step 6: Final answer
    x = 4,190.62

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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.