Home / 9,218.39-12,724.10-7,972.83

Finding the Fourth Proportional to 9,218.39, 12,724.10 and 7,972.83

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Solution

The fourth proportional to 9,218.39, 12,724.10 and 7,972.83 is: 11,004.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,218.39 : 12,724.10 = 7,972.83 : x
  2. Step 2: Convert to fraction form
    9,218.39/12,724.10 = 7,972.83/x
  3. Step 3: Cross multiply
    9,218.39x = 12,724.10 × 7,972.83
  4. Step 4: Simplify right side
    9,218.39x = 101,447,086.20
  5. Step 5: Solve for x
    x = 101,447,086.20/9,218.39
  6. Step 6: Final answer
    x = 11,004.86

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.