Home / 3,185.44-4,393.47-2,791.78

Finding the Fourth Proportional to 3,185.44, 4,393.47 and 2,791.78

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Solution

The fourth proportional to 3,185.44, 4,393.47 and 2,791.78 is: 3,850.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.44 : 4,393.47 = 2,791.78 : x
  2. Step 2: Convert to fraction form
    3,185.44/4,393.47 = 2,791.78/x
  3. Step 3: Cross multiply
    3,185.44x = 4,393.47 × 2,791.78
  4. Step 4: Simplify right side
    3,185.44x = 12,265,601.68
  5. Step 5: Solve for x
    x = 12,265,601.68/3,185.44
  6. Step 6: Final answer
    x = 3,850.52

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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.