Home / 3,945.74-5,915.86-1,996.61

Finding the Fourth Proportional to 3,945.74, 5,915.86 and 1,996.61

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Solution

The fourth proportional to 3,945.74, 5,915.86 and 1,996.61 is: 2,993.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.74 : 5,915.86 = 1,996.61 : x
  2. Step 2: Convert to fraction form
    3,945.74/5,915.86 = 1,996.61/x
  3. Step 3: Cross multiply
    3,945.74x = 5,915.86 × 1,996.61
  4. Step 4: Simplify right side
    3,945.74x = 11,811,630.66
  5. Step 5: Solve for x
    x = 11,811,630.66/3,945.74
  6. Step 6: Final answer
    x = 2,993.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.