Home / 6,121.22-9,183.20-1,961.55

Finding the Fourth Proportional to 6,121.22, 9,183.20 and 1,961.55

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Solution

The fourth proportional to 6,121.22, 9,183.20 and 1,961.55 is: 2,942.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,121.22 : 9,183.20 = 1,961.55 : x
  2. Step 2: Convert to fraction form
    6,121.22/9,183.20 = 1,961.55/x
  3. Step 3: Cross multiply
    6,121.22x = 9,183.20 × 1,961.55
  4. Step 4: Simplify right side
    6,121.22x = 18,013,296.15
  5. Step 5: Solve for x
    x = 18,013,296.15/6,121.22
  6. Step 6: Final answer
    x = 2,942.76

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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.