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Finding the Fourth Proportional to 5,912.40, 8,879.51 and 3,965.97

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Solution

The fourth proportional to 5,912.40, 8,879.51 and 3,965.97 is: 5,956.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,912.40 : 8,879.51 = 3,965.97 : x
  2. Step 2: Convert to fraction form
    5,912.40/8,879.51 = 3,965.97/x
  3. Step 3: Cross multiply
    5,912.40x = 8,879.51 × 3,965.97
  4. Step 4: Simplify right side
    5,912.40x = 35,215,870.27
  5. Step 5: Solve for x
    x = 35,215,870.27/5,912.40
  6. Step 6: Final answer
    x = 5,956.27

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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.