Home / 2,781.98-3,838.26-1,662.38

Finding the Fourth Proportional to 2,781.98, 3,838.26 and 1,662.38

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Solution

The fourth proportional to 2,781.98, 3,838.26 and 1,662.38 is: 2,293.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.98 : 3,838.26 = 1,662.38 : x
  2. Step 2: Convert to fraction form
    2,781.98/3,838.26 = 1,662.38/x
  3. Step 3: Cross multiply
    2,781.98x = 3,838.26 × 1,662.38
  4. Step 4: Simplify right side
    2,781.98x = 6,380,646.66
  5. Step 5: Solve for x
    x = 6,380,646.66/2,781.98
  6. Step 6: Final answer
    x = 2,293.56

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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.