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Finding the Fourth Proportional to 2,874.34, 4,309.20 and 2,711.38

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Solution

The fourth proportional to 2,874.34, 4,309.20 and 2,711.38 is: 4,064.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,874.34 : 4,309.20 = 2,711.38 : x
  2. Step 2: Convert to fraction form
    2,874.34/4,309.20 = 2,711.38/x
  3. Step 3: Cross multiply
    2,874.34x = 4,309.20 × 2,711.38
  4. Step 4: Simplify right side
    2,874.34x = 11,683,878.70
  5. Step 5: Solve for x
    x = 11,683,878.70/2,874.34
  6. Step 6: Final answer
    x = 4,064.89

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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.