Home / 8,191.31-12,294.25-3,811.23

Finding the Fourth Proportional to 8,191.31, 12,294.25 and 3,811.23

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Solution

The fourth proportional to 8,191.31, 12,294.25 and 3,811.23 is: 5,720.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,191.31 : 12,294.25 = 3,811.23 : x
  2. Step 2: Convert to fraction form
    8,191.31/12,294.25 = 3,811.23/x
  3. Step 3: Cross multiply
    8,191.31x = 12,294.25 × 3,811.23
  4. Step 4: Simplify right side
    8,191.31x = 46,856,204.90
  5. Step 5: Solve for x
    x = 46,856,204.90/8,191.31
  6. Step 6: Final answer
    x = 5,720.24

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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.