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Finding the Fourth Proportional to 2,655.28, 3,982 and 923.52

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Solution

The fourth proportional to 2,655.28, 3,982 and 923.52 is: 1,384.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,655.28 : 3,982 = 923.52 : x
  2. Step 2: Convert to fraction form
    2,655.28/3,982 = 923.52/x
  3. Step 3: Cross multiply
    2,655.28x = 3,982 × 923.52
  4. Step 4: Simplify right side
    2,655.28x = 3,677,456.64
  5. Step 5: Solve for x
    x = 3,677,456.64/2,655.28
  6. Step 6: Final answer
    x = 1,384.96

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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.