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Finding the Fourth Proportional to 2,553.82, 3,831 and 910.52

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Solution

The fourth proportional to 2,553.82, 3,831 and 910.52 is: 1,365.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,553.82 : 3,831 = 910.52 : x
  2. Step 2: Convert to fraction form
    2,553.82/3,831 = 910.52/x
  3. Step 3: Cross multiply
    2,553.82x = 3,831 × 910.52
  4. Step 4: Simplify right side
    2,553.82x = 3,488,202.12
  5. Step 5: Solve for x
    x = 3,488,202.12/2,553.82
  6. Step 6: Final answer
    x = 1,365.88

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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.