Home / 3,682.72-5,082.12-2,191.78

Finding the Fourth Proportional to 3,682.72, 5,082.12 and 2,191.78

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Solution

The fourth proportional to 3,682.72, 5,082.12 and 2,191.78 is: 3,024.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,682.72 : 5,082.12 = 2,191.78 : x
  2. Step 2: Convert to fraction form
    3,682.72/5,082.12 = 2,191.78/x
  3. Step 3: Cross multiply
    3,682.72x = 5,082.12 × 2,191.78
  4. Step 4: Simplify right side
    3,682.72x = 11,138,888.97
  5. Step 5: Solve for x
    x = 11,138,888.97/3,682.72
  6. Step 6: Final answer
    x = 3,024.64

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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.