Home / 5,121.38-7,677.49-2,000.66

Finding the Fourth Proportional to 5,121.38, 7,677.49 and 2,000.66

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Solution

The fourth proportional to 5,121.38, 7,677.49 and 2,000.66 is: 2,999.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.38 : 7,677.49 = 2,000.66 : x
  2. Step 2: Convert to fraction form
    5,121.38/7,677.49 = 2,000.66/x
  3. Step 3: Cross multiply
    5,121.38x = 7,677.49 × 2,000.66
  4. Step 4: Simplify right side
    5,121.38x = 15,360,047.14
  5. Step 5: Solve for x
    x = 15,360,047.14/5,121.38
  6. Step 6: Final answer
    x = 2,999.20

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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.