Home / 1,781.38-2,669.03-1,391.23

Finding the Fourth Proportional to 1,781.38, 2,669.03 and 1,391.23

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Solution

The fourth proportional to 1,781.38, 2,669.03 and 1,391.23 is: 2,084.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.38 : 2,669.03 = 1,391.23 : x
  2. Step 2: Convert to fraction form
    1,781.38/2,669.03 = 1,391.23/x
  3. Step 3: Cross multiply
    1,781.38x = 2,669.03 × 1,391.23
  4. Step 4: Simplify right side
    1,781.38x = 3,713,234.61
  5. Step 5: Solve for x
    x = 3,713,234.61/1,781.38
  6. Step 6: Final answer
    x = 2,084.47

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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.