Home / 5,122.75-7,067.31-3,781.57

Finding the Fourth Proportional to 5,122.75, 7,067.31 and 3,781.57

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Solution

The fourth proportional to 5,122.75, 7,067.31 and 3,781.57 is: 5,217.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,122.75 : 7,067.31 = 3,781.57 : x
  2. Step 2: Convert to fraction form
    5,122.75/7,067.31 = 3,781.57/x
  3. Step 3: Cross multiply
    5,122.75x = 7,067.31 × 3,781.57
  4. Step 4: Simplify right side
    5,122.75x = 26,725,527.48
  5. Step 5: Solve for x
    x = 26,725,527.48/5,122.75
  6. Step 6: Final answer
    x = 5,217.03

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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.