Home / 5,121.68-7,067.94-3,231.29

Finding the Fourth Proportional to 5,121.68, 7,067.94 and 3,231.29

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Solution

The fourth proportional to 5,121.68, 7,067.94 and 3,231.29 is: 4,459.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.68 : 7,067.94 = 3,231.29 : x
  2. Step 2: Convert to fraction form
    5,121.68/7,067.94 = 3,231.29/x
  3. Step 3: Cross multiply
    5,121.68x = 7,067.94 × 3,231.29
  4. Step 4: Simplify right side
    5,121.68x = 22,838,580.76
  5. Step 5: Solve for x
    x = 22,838,580.76/5,121.68
  6. Step 6: Final answer
    x = 4,459.20

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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.