Home / 3,067.70-4,220.14-2,687.88

Finding the Fourth Proportional to 3,067.70, 4,220.14 and 2,687.88

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Solution

The fourth proportional to 3,067.70, 4,220.14 and 2,687.88 is: 3,697.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,067.70 : 4,220.14 = 2,687.88 : x
  2. Step 2: Convert to fraction form
    3,067.70/4,220.14 = 2,687.88/x
  3. Step 3: Cross multiply
    3,067.70x = 4,220.14 × 2,687.88
  4. Step 4: Simplify right side
    3,067.70x = 11,343,229.90
  5. Step 5: Solve for x
    x = 11,343,229.90/3,067.70
  6. Step 6: Final answer
    x = 3,697.63

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1.5x scale

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.