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Finding the Fourth Proportional to 8,908.92, 12,292.83 and 5,722.92

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Solution

The fourth proportional to 8,908.92, 12,292.83 and 5,722.92 is: 7,896.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,908.92 : 12,292.83 = 5,722.92 : x
  2. Step 2: Convert to fraction form
    8,908.92/12,292.83 = 5,722.92/x
  3. Step 3: Cross multiply
    8,908.92x = 12,292.83 × 5,722.92
  4. Step 4: Simplify right side
    8,908.92x = 70,350,882.66
  5. Step 5: Solve for x
    x = 70,350,882.66/8,908.92
  6. Step 6: Final answer
    x = 7,896.68

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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.