Home / 1,414.11-2,121.54-581.43

Finding the Fourth Proportional to 1,414.11, 2,121.54 and 581.43

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Solution

The fourth proportional to 1,414.11, 2,121.54 and 581.43 is: 872.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,414.11 : 2,121.54 = 581.43 : x
  2. Step 2: Convert to fraction form
    1,414.11/2,121.54 = 581.43/x
  3. Step 3: Cross multiply
    1,414.11x = 2,121.54 × 581.43
  4. Step 4: Simplify right side
    1,414.11x = 1,233,527.00
  5. Step 5: Solve for x
    x = 1,233,527.00/1,414.11
  6. Step 6: Final answer
    x = 872.30

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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.