Home / 3,851.92-5,778.74-1,512.15

Finding the Fourth Proportional to 3,851.92, 5,778.74 and 1,512.15

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Solution

The fourth proportional to 3,851.92, 5,778.74 and 1,512.15 is: 2,268.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.92 : 5,778.74 = 1,512.15 : x
  2. Step 2: Convert to fraction form
    3,851.92/5,778.74 = 1,512.15/x
  3. Step 3: Cross multiply
    3,851.92x = 5,778.74 × 1,512.15
  4. Step 4: Simplify right side
    3,851.92x = 8,738,321.69
  5. Step 5: Solve for x
    x = 8,738,321.69/3,851.92
  6. Step 6: Final answer
    x = 2,268.56

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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.