Home / 8,381.25-12,571.66-2,141.31

Finding the Fourth Proportional to 8,381.25, 12,571.66 and 2,141.31

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Solution

The fourth proportional to 8,381.25, 12,571.66 and 2,141.31 is: 3,211.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,381.25 : 12,571.66 = 2,141.31 : x
  2. Step 2: Convert to fraction form
    8,381.25/12,571.66 = 2,141.31/x
  3. Step 3: Cross multiply
    8,381.25x = 12,571.66 × 2,141.31
  4. Step 4: Simplify right side
    8,381.25x = 26,919,821.27
  5. Step 5: Solve for x
    x = 26,919,821.27/8,381.25
  6. Step 6: Final answer
    x = 3,211.91

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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.