Home / 8,901.51-12,292.25-7,145.97

Finding the Fourth Proportional to 8,901.51, 12,292.25 and 7,145.97

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Solution

The fourth proportional to 8,901.51, 12,292.25 and 7,145.97 is: 9,867.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,901.51 : 12,292.25 = 7,145.97 : x
  2. Step 2: Convert to fraction form
    8,901.51/12,292.25 = 7,145.97/x
  3. Step 3: Cross multiply
    8,901.51x = 12,292.25 × 7,145.97
  4. Step 4: Simplify right side
    8,901.51x = 87,840,049.73
  5. Step 5: Solve for x
    x = 87,840,049.73/8,901.51
  6. Step 6: Final answer
    x = 9,867.99

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Half scale
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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.