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Finding the Fourth Proportional to 3,488.62, 5,233.11 and 891.58

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Solution

The fourth proportional to 3,488.62, 5,233.11 and 891.58 is: 1,337.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,488.62 : 5,233.11 = 891.58 : x
  2. Step 2: Convert to fraction form
    3,488.62/5,233.11 = 891.58/x
  3. Step 3: Cross multiply
    3,488.62x = 5,233.11 × 891.58
  4. Step 4: Simplify right side
    3,488.62x = 4,665,736.21
  5. Step 5: Solve for x
    x = 4,665,736.21/3,488.62
  6. Step 6: Final answer
    x = 1,337.42

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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.