Home / 3,121.18-4,306.11-2,002.62

Finding the Fourth Proportional to 3,121.18, 4,306.11 and 2,002.62

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Solution

The fourth proportional to 3,121.18, 4,306.11 and 2,002.62 is: 2,762.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.18 : 4,306.11 = 2,002.62 : x
  2. Step 2: Convert to fraction form
    3,121.18/4,306.11 = 2,002.62/x
  3. Step 3: Cross multiply
    3,121.18x = 4,306.11 × 2,002.62
  4. Step 4: Simplify right side
    3,121.18x = 8,623,521.91
  5. Step 5: Solve for x
    x = 8,623,521.91/3,121.18
  6. Step 6: Final answer
    x = 2,762.90

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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.