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Finding the Fourth Proportional to 8,251.93, 12,390.27 and 7,964.88

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Solution

The fourth proportional to 8,251.93, 12,390.27 and 7,964.88 is: 11,959.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,251.93 : 12,390.27 = 7,964.88 : x
  2. Step 2: Convert to fraction form
    8,251.93/12,390.27 = 7,964.88/x
  3. Step 3: Cross multiply
    8,251.93x = 12,390.27 × 7,964.88
  4. Step 4: Simplify right side
    8,251.93x = 98,687,007.08
  5. Step 5: Solve for x
    x = 98,687,007.08/8,251.93
  6. Step 6: Final answer
    x = 11,959.27

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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.