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Finding the Fourth Proportional to 2,479.70, 3,418.92 and 2,082.92

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Solution

The fourth proportional to 2,479.70, 3,418.92 and 2,082.92 is: 2,871.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,479.70 : 3,418.92 = 2,082.92 : x
  2. Step 2: Convert to fraction form
    2,479.70/3,418.92 = 2,082.92/x
  3. Step 3: Cross multiply
    2,479.70x = 3,418.92 × 2,082.92
  4. Step 4: Simplify right side
    2,479.70x = 7,121,336.85
  5. Step 5: Solve for x
    x = 7,121,336.85/2,479.70
  6. Step 6: Final answer
    x = 2,871.85

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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.