Home / 3,519.71-5,242.12-3,422.85

Finding the Fourth Proportional to 3,519.71, 5,242.12 and 3,422.85

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Solution

The fourth proportional to 3,519.71, 5,242.12 and 3,422.85 is: 5,097.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,519.71 : 5,242.12 = 3,422.85 : x
  2. Step 2: Convert to fraction form
    3,519.71/5,242.12 = 3,422.85/x
  3. Step 3: Cross multiply
    3,519.71x = 5,242.12 × 3,422.85
  4. Step 4: Simplify right side
    3,519.71x = 17,942,990.44
  5. Step 5: Solve for x
    x = 17,942,990.44/3,519.71
  6. Step 6: Final answer
    x = 5,097.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.