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Finding the Fourth Proportional to 5,778.38, 7,974.11 and 3,125.79

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Solution

The fourth proportional to 5,778.38, 7,974.11 and 3,125.79 is: 4,313.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,778.38 : 7,974.11 = 3,125.79 : x
  2. Step 2: Convert to fraction form
    5,778.38/7,974.11 = 3,125.79/x
  3. Step 3: Cross multiply
    5,778.38x = 7,974.11 × 3,125.79
  4. Step 4: Simplify right side
    5,778.38x = 24,925,393.30
  5. Step 5: Solve for x
    x = 24,925,393.30/5,778.38
  6. Step 6: Final answer
    x = 4,313.56

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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.