Home / 2,781.97-3,839.13-1,787.26

Finding the Fourth Proportional to 2,781.97, 3,839.13 and 1,787.26

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Solution

The fourth proportional to 2,781.97, 3,839.13 and 1,787.26 is: 2,466.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.97 : 3,839.13 = 1,787.26 : x
  2. Step 2: Convert to fraction form
    2,781.97/3,839.13 = 1,787.26/x
  3. Step 3: Cross multiply
    2,781.97x = 3,839.13 × 1,787.26
  4. Step 4: Simplify right side
    2,781.97x = 6,861,495.35
  5. Step 5: Solve for x
    x = 6,861,495.35/2,781.97
  6. Step 6: Final answer
    x = 2,466.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.