Home / 8,131.30-12,197.67-3,386.41

Finding the Fourth Proportional to 8,131.30, 12,197.67 and 3,386.41

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Solution

The fourth proportional to 8,131.30, 12,197.67 and 3,386.41 is: 5,079.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,131.30 : 12,197.67 = 3,386.41 : x
  2. Step 2: Convert to fraction form
    8,131.30/12,197.67 = 3,386.41/x
  3. Step 3: Cross multiply
    8,131.30x = 12,197.67 × 3,386.41
  4. Step 4: Simplify right side
    8,131.30x = 41,306,311.66
  5. Step 5: Solve for x
    x = 41,306,311.66/8,131.30
  6. Step 6: Final answer
    x = 5,079.91

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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.