Home / 8,125.10-12,182.70-3,188.78

Finding the Fourth Proportional to 8,125.10, 12,182.70 and 3,188.78

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Solution

The fourth proportional to 8,125.10, 12,182.70 and 3,188.78 is: 4,781.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.10 : 12,182.70 = 3,188.78 : x
  2. Step 2: Convert to fraction form
    8,125.10/12,182.70 = 3,188.78/x
  3. Step 3: Cross multiply
    8,125.10x = 12,182.70 × 3,188.78
  4. Step 4: Simplify right side
    8,125.10x = 38,847,950.11
  5. Step 5: Solve for x
    x = 38,847,950.11/8,125.10
  6. Step 6: Final answer
    x = 4,781.23

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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.