Home / 3,988.39-5,505.22-2,728.97

Finding the Fourth Proportional to 3,988.39, 5,505.22 and 2,728.97

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Solution

The fourth proportional to 3,988.39, 5,505.22 and 2,728.97 is: 3,766.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.39 : 5,505.22 = 2,728.97 : x
  2. Step 2: Convert to fraction form
    3,988.39/5,505.22 = 2,728.97/x
  3. Step 3: Cross multiply
    3,988.39x = 5,505.22 × 2,728.97
  4. Step 4: Simplify right side
    3,988.39x = 15,023,580.22
  5. Step 5: Solve for x
    x = 15,023,580.22/3,988.39
  6. Step 6: Final answer
    x = 3,766.83

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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.