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Finding the Fourth Proportional to 8,359.02, 12,540.96 and 6,891.30

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Solution

The fourth proportional to 8,359.02, 12,540.96 and 6,891.30 is: 10,338.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,359.02 : 12,540.96 = 6,891.30 : x
  2. Step 2: Convert to fraction form
    8,359.02/12,540.96 = 6,891.30/x
  3. Step 3: Cross multiply
    8,359.02x = 12,540.96 × 6,891.30
  4. Step 4: Simplify right side
    8,359.02x = 86,423,517.65
  5. Step 5: Solve for x
    x = 86,423,517.65/8,359.02
  6. Step 6: Final answer
    x = 10,338.95

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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.