Home / 1,440.38-2,160.57-414.38

Finding the Fourth Proportional to 1,440.38, 2,160.57 and 414.38

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Solution

The fourth proportional to 1,440.38, 2,160.57 and 414.38 is: 621.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.38 : 2,160.57 = 414.38 : x
  2. Step 2: Convert to fraction form
    1,440.38/2,160.57 = 414.38/x
  3. Step 3: Cross multiply
    1,440.38x = 2,160.57 × 414.38
  4. Step 4: Simplify right side
    1,440.38x = 895,286.19
  5. Step 5: Solve for x
    x = 895,286.19/1,440.38
  6. Step 6: Final answer
    x = 621.56

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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.