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Finding the Fourth Proportional to 2,174.92, 3,000.68 and 1,230.62

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Solution

The fourth proportional to 2,174.92, 3,000.68 and 1,230.62 is: 1,697.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,174.92 : 3,000.68 = 1,230.62 : x
  2. Step 2: Convert to fraction form
    2,174.92/3,000.68 = 1,230.62/x
  3. Step 3: Cross multiply
    2,174.92x = 3,000.68 × 1,230.62
  4. Step 4: Simplify right side
    2,174.92x = 3,692,690.67
  5. Step 5: Solve for x
    x = 3,692,690.67/2,174.92
  6. Step 6: Final answer
    x = 1,697.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.