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Finding the Fourth Proportional to 2,192.92, 3,288.15 and 892.87

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Solution

The fourth proportional to 2,192.92, 3,288.15 and 892.87 is: 1,338.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,192.92 : 3,288.15 = 892.87 : x
  2. Step 2: Convert to fraction form
    2,192.92/3,288.15 = 892.87/x
  3. Step 3: Cross multiply
    2,192.92x = 3,288.15 × 892.87
  4. Step 4: Simplify right side
    2,192.92x = 2,935,874.05
  5. Step 5: Solve for x
    x = 2,935,874.05/2,192.92
  6. Step 6: Final answer
    x = 1,338.80

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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.