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Finding the Fourth Proportional to 3,082.33, 4,255.41 and 1,964.21

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Solution

The fourth proportional to 3,082.33, 4,255.41 and 1,964.21 is: 2,711.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,082.33 : 4,255.41 = 1,964.21 : x
  2. Step 2: Convert to fraction form
    3,082.33/4,255.41 = 1,964.21/x
  3. Step 3: Cross multiply
    3,082.33x = 4,255.41 × 1,964.21
  4. Step 4: Simplify right side
    3,082.33x = 8,358,518.88
  5. Step 5: Solve for x
    x = 8,358,518.88/3,082.33
  6. Step 6: Final answer
    x = 2,711.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.