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Finding the Fourth Proportional to 3,857.92, 5,787.20 and 1,882.88

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Solution

The fourth proportional to 3,857.92, 5,787.20 and 1,882.88 is: 2,824.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.92 : 5,787.20 = 1,882.88 : x
  2. Step 2: Convert to fraction form
    3,857.92/5,787.20 = 1,882.88/x
  3. Step 3: Cross multiply
    3,857.92x = 5,787.20 × 1,882.88
  4. Step 4: Simplify right side
    3,857.92x = 10,896,603.14
  5. Step 5: Solve for x
    x = 10,896,603.14/3,857.92
  6. Step 6: Final answer
    x = 2,824.48

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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.