Home / 3,131.41-4,322.19-1,951.78

Finding the Fourth Proportional to 3,131.41, 4,322.19 and 1,951.78

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Solution

The fourth proportional to 3,131.41, 4,322.19 and 1,951.78 is: 2,693.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.41 : 4,322.19 = 1,951.78 : x
  2. Step 2: Convert to fraction form
    3,131.41/4,322.19 = 1,951.78/x
  3. Step 3: Cross multiply
    3,131.41x = 4,322.19 × 1,951.78
  4. Step 4: Simplify right side
    3,131.41x = 8,435,964.00
  5. Step 5: Solve for x
    x = 8,435,964.00/3,131.41
  6. Step 6: Final answer
    x = 2,693.98

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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.