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Finding the Fourth Proportional to 8,359.04, 12,540.98 and 6,891.32

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Solution

The fourth proportional to 8,359.04, 12,540.98 and 6,891.32 is: 10,338.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,359.04 : 12,540.98 = 6,891.32 : x
  2. Step 2: Convert to fraction form
    8,359.04/12,540.98 = 6,891.32/x
  3. Step 3: Cross multiply
    8,359.04x = 12,540.98 × 6,891.32
  4. Step 4: Simplify right side
    8,359.04x = 86,423,906.29
  5. Step 5: Solve for x
    x = 86,423,906.29/8,359.04
  6. Step 6: Final answer
    x = 10,338.98

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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.