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Finding the Fourth Proportional to 3,849.28, 5,309.28 and 3,791.68

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Solution

The fourth proportional to 3,849.28, 5,309.28 and 3,791.68 is: 5,229.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,849.28 : 5,309.28 = 3,791.68 : x
  2. Step 2: Convert to fraction form
    3,849.28/5,309.28 = 3,791.68/x
  3. Step 3: Cross multiply
    3,849.28x = 5,309.28 × 3,791.68
  4. Step 4: Simplify right side
    3,849.28x = 20,131,090.79
  5. Step 5: Solve for x
    x = 20,131,090.79/3,849.28
  6. Step 6: Final answer
    x = 5,229.83

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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.