Home / 6,121.85-9,182.65-1,961.87

Finding the Fourth Proportional to 6,121.85, 9,182.65 and 1,961.87

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Solution

The fourth proportional to 6,121.85, 9,182.65 and 1,961.87 is: 2,942.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,121.85 : 9,182.65 = 1,961.87 : x
  2. Step 2: Convert to fraction form
    6,121.85/9,182.65 = 1,961.87/x
  3. Step 3: Cross multiply
    6,121.85x = 9,182.65 × 1,961.87
  4. Step 4: Simplify right side
    6,121.85x = 18,015,155.75
  5. Step 5: Solve for x
    x = 18,015,155.75/6,121.85
  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.