Home / 1,414.32-2,121.48-1,381.92

Finding the Fourth Proportional to 1,414.32, 2,121.48 and 1,381.92

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Solution

The fourth proportional to 1,414.32, 2,121.48 and 1,381.92 is: 2,072.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,414.32 : 2,121.48 = 1,381.92 : x
  2. Step 2: Convert to fraction form
    1,414.32/2,121.48 = 1,381.92/x
  3. Step 3: Cross multiply
    1,414.32x = 2,121.48 × 1,381.92
  4. Step 4: Simplify right side
    1,414.32x = 2,931,715.64
  5. Step 5: Solve for x
    x = 2,931,715.64/1,414.32
  6. Step 6: Final answer
    x = 2,072.88

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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.