Home / 8,186.20-12,279.60-2,639.62

Finding the Fourth Proportional to 8,186.20, 12,279.60 and 2,639.62

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Solution

The fourth proportional to 8,186.20, 12,279.60 and 2,639.62 is: 3,959.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,186.20 : 12,279.60 = 2,639.62 : x
  2. Step 2: Convert to fraction form
    8,186.20/12,279.60 = 2,639.62/x
  3. Step 3: Cross multiply
    8,186.20x = 12,279.60 × 2,639.62
  4. Step 4: Simplify right side
    8,186.20x = 32,413,447.05
  5. Step 5: Solve for x
    x = 32,413,447.05/8,186.20
  6. Step 6: Final answer
    x = 3,959.52

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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.