Home / 8,108.88-12,165.21-3,177.18

Finding the Fourth Proportional to 8,108.88, 12,165.21 and 3,177.18

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Solution

The fourth proportional to 8,108.88, 12,165.21 and 3,177.18 is: 4,766.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,108.88 : 12,165.21 = 3,177.18 : x
  2. Step 2: Convert to fraction form
    8,108.88/12,165.21 = 3,177.18/x
  3. Step 3: Cross multiply
    8,108.88x = 12,165.21 × 3,177.18
  4. Step 4: Simplify right side
    8,108.88x = 38,651,061.91
  5. Step 5: Solve for x
    x = 38,651,061.91/8,108.88
  6. Step 6: Final answer
    x = 4,766.51

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1.5x scale

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.