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Finding the Fourth Proportional to 3,679.77, 5,519.79 and 1,082.72

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Solution

The fourth proportional to 3,679.77, 5,519.79 and 1,082.72 is: 1,624.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.77 : 5,519.79 = 1,082.72 : x
  2. Step 2: Convert to fraction form
    3,679.77/5,519.79 = 1,082.72/x
  3. Step 3: Cross multiply
    3,679.77x = 5,519.79 × 1,082.72
  4. Step 4: Simplify right side
    3,679.77x = 5,976,359.43
  5. Step 5: Solve for x
    x = 5,976,359.43/3,679.77
  6. Step 6: Final answer
    x = 1,624.11

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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.