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Finding the Fourth Proportional to 2,167.67, 3,251.70 and 607.69

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Solution

The fourth proportional to 2,167.67, 3,251.70 and 607.69 is: 911.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,167.67 : 3,251.70 = 607.69 : x
  2. Step 2: Convert to fraction form
    2,167.67/3,251.70 = 607.69/x
  3. Step 3: Cross multiply
    2,167.67x = 3,251.70 × 607.69
  4. Step 4: Simplify right side
    2,167.67x = 1,976,025.57
  5. Step 5: Solve for x
    x = 1,976,025.57/2,167.67
  6. Step 6: Final answer
    x = 911.59

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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.