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Finding the Fourth Proportional to 3,958.80, 5,939.20 and 3,460.56

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Solution

The fourth proportional to 3,958.80, 5,939.20 and 3,460.56 is: 5,191.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,958.80 : 5,939.20 = 3,460.56 : x
  2. Step 2: Convert to fraction form
    3,958.80/5,939.20 = 3,460.56/x
  3. Step 3: Cross multiply
    3,958.80x = 5,939.20 × 3,460.56
  4. Step 4: Simplify right side
    3,958.80x = 20,552,957.95
  5. Step 5: Solve for x
    x = 20,552,957.95/3,958.80
  6. Step 6: Final answer
    x = 5,191.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.