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Finding the Fourth Proportional to 3,882.82, 5,823.62 and 1,285.76

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Solution

The fourth proportional to 3,882.82, 5,823.62 and 1,285.76 is: 1,928.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,882.82 : 5,823.62 = 1,285.76 : x
  2. Step 2: Convert to fraction form
    3,882.82/5,823.62 = 1,285.76/x
  3. Step 3: Cross multiply
    3,882.82x = 5,823.62 × 1,285.76
  4. Step 4: Simplify right side
    3,882.82x = 7,487,761.46
  5. Step 5: Solve for x
    x = 7,487,761.46/3,882.82
  6. Step 6: Final answer
    x = 1,928.43

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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.