Home / 5,414.14-8,121.50-1,518.85

Finding the Fourth Proportional to 5,414.14, 8,121.50 and 1,518.85

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Solution

The fourth proportional to 5,414.14, 8,121.50 and 1,518.85 is: 2,278.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,414.14 : 8,121.50 = 1,518.85 : x
  2. Step 2: Convert to fraction form
    5,414.14/8,121.50 = 1,518.85/x
  3. Step 3: Cross multiply
    5,414.14x = 8,121.50 × 1,518.85
  4. Step 4: Simplify right side
    5,414.14x = 12,335,348.53
  5. Step 5: Solve for x
    x = 12,335,348.53/5,414.14
  6. Step 6: Final answer
    x = 2,278.36

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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.