Home / 8,138.12-12,207.06-2,942.72

Finding the Fourth Proportional to 8,138.12, 12,207.06 and 2,942.72

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Solution

The fourth proportional to 8,138.12, 12,207.06 and 2,942.72 is: 4,414.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.12 : 12,207.06 = 2,942.72 : x
  2. Step 2: Convert to fraction form
    8,138.12/12,207.06 = 2,942.72/x
  3. Step 3: Cross multiply
    8,138.12x = 12,207.06 × 2,942.72
  4. Step 4: Simplify right side
    8,138.12x = 35,921,959.60
  5. Step 5: Solve for x
    x = 35,921,959.60/8,138.12
  6. Step 6: Final answer
    x = 4,414.04

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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.