Home / 3,414.37-5,121.12-1,440.78

Finding the Fourth Proportional to 3,414.37, 5,121.12 and 1,440.78

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Solution

The fourth proportional to 3,414.37, 5,121.12 and 1,440.78 is: 2,160.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,414.37 : 5,121.12 = 1,440.78 : x
  2. Step 2: Convert to fraction form
    3,414.37/5,121.12 = 1,440.78/x
  3. Step 3: Cross multiply
    3,414.37x = 5,121.12 × 1,440.78
  4. Step 4: Simplify right side
    3,414.37x = 7,378,414.12
  5. Step 5: Solve for x
    x = 7,378,414.12/3,414.37
  6. Step 6: Final answer
    x = 2,160.99

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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.