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Finding the Fourth Proportional to 2,167.39, 3,251.67 and 628.39

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Solution

The fourth proportional to 2,167.39, 3,251.67 and 628.39 is: 942.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,167.39 : 3,251.67 = 628.39 : x
  2. Step 2: Convert to fraction form
    2,167.39/3,251.67 = 628.39/x
  3. Step 3: Cross multiply
    2,167.39x = 3,251.67 × 628.39
  4. Step 4: Simplify right side
    2,167.39x = 2,043,316.91
  5. Step 5: Solve for x
    x = 2,043,316.91/2,167.39
  6. Step 6: Final answer
    x = 942.75

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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.