Home / 5,121.22-7,066.35-3,231.49

Finding the Fourth Proportional to 5,121.22, 7,066.35 and 3,231.49

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Solution

The fourth proportional to 5,121.22, 7,066.35 and 3,231.49 is: 4,458.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.22 : 7,066.35 = 3,231.49 : x
  2. Step 2: Convert to fraction form
    5,121.22/7,066.35 = 3,231.49/x
  3. Step 3: Cross multiply
    5,121.22x = 7,066.35 × 3,231.49
  4. Step 4: Simplify right side
    5,121.22x = 22,834,839.36
  5. Step 5: Solve for x
    x = 22,834,839.36/5,121.22
  6. Step 6: Final answer
    x = 4,458.87

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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.