Home / 6,871.20-10,306.80-2,711.40

Finding the Fourth Proportional to 6,871.20, 10,306.80 and 2,711.40

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Solution

The fourth proportional to 6,871.20, 10,306.80 and 2,711.40 is: 4,067.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,871.20 : 10,306.80 = 2,711.40 : x
  2. Step 2: Convert to fraction form
    6,871.20/10,306.80 = 2,711.40/x
  3. Step 3: Cross multiply
    6,871.20x = 10,306.80 × 2,711.40
  4. Step 4: Simplify right side
    6,871.20x = 27,945,857.52
  5. Step 5: Solve for x
    x = 27,945,857.52/6,871.20
  6. Step 6: Final answer
    x = 4,067.10

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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.