Home / 3,414.30-5,121.45-1,105.80

Finding the Fourth Proportional to 3,414.30, 5,121.45 and 1,105.80

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Solution

The fourth proportional to 3,414.30, 5,121.45 and 1,105.80 is: 1,658.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,414.30 : 5,121.45 = 1,105.80 : x
  2. Step 2: Convert to fraction form
    3,414.30/5,121.45 = 1,105.80/x
  3. Step 3: Cross multiply
    3,414.30x = 5,121.45 × 1,105.80
  4. Step 4: Simplify right side
    3,414.30x = 5,663,299.41
  5. Step 5: Solve for x
    x = 5,663,299.41/3,414.30
  6. Step 6: Final answer
    x = 1,658.70

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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.