Home / 3,838.97-5,758.55-2,871.21

Finding the Fourth Proportional to 3,838.97, 5,758.55 and 2,871.21

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Solution

The fourth proportional to 3,838.97, 5,758.55 and 2,871.21 is: 4,306.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,838.97 : 5,758.55 = 2,871.21 : x
  2. Step 2: Convert to fraction form
    3,838.97/5,758.55 = 2,871.21/x
  3. Step 3: Cross multiply
    3,838.97x = 5,758.55 × 2,871.21
  4. Step 4: Simplify right side
    3,838.97x = 16,534,006.35
  5. Step 5: Solve for x
    x = 16,534,006.35/3,838.97
  6. Step 6: Final answer
    x = 4,306.89

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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.