Home / 8,360.11-12,540.17-2,120.59

Finding the Fourth Proportional to 8,360.11, 12,540.17 and 2,120.59

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Solution

The fourth proportional to 8,360.11, 12,540.17 and 2,120.59 is: 3,180.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,360.11 : 12,540.17 = 2,120.59 : x
  2. Step 2: Convert to fraction form
    8,360.11/12,540.17 = 2,120.59/x
  3. Step 3: Cross multiply
    8,360.11x = 12,540.17 × 2,120.59
  4. Step 4: Simplify right side
    8,360.11x = 26,592,585.78
  5. Step 5: Solve for x
    x = 26,592,585.78/8,360.11
  6. Step 6: Final answer
    x = 3,180.89

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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.