Home / 2,781.44-3,838.49-1,838.90

Finding the Fourth Proportional to 2,781.44, 3,838.49 and 1,838.90

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Solution

The fourth proportional to 2,781.44, 3,838.49 and 1,838.90 is: 2,537.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.44 : 3,838.49 = 1,838.90 : x
  2. Step 2: Convert to fraction form
    2,781.44/3,838.49 = 1,838.90/x
  3. Step 3: Cross multiply
    2,781.44x = 3,838.49 × 1,838.90
  4. Step 4: Simplify right side
    2,781.44x = 7,058,606.56
  5. Step 5: Solve for x
    x = 7,058,606.56/2,781.44
  6. Step 6: Final answer
    x = 2,537.75

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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.