Home / 3,131.60-4,694.96-1,831.55

Finding the Fourth Proportional to 3,131.60, 4,694.96 and 1,831.55

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Solution

The fourth proportional to 3,131.60, 4,694.96 and 1,831.55 is: 2,745.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.60 : 4,694.96 = 1,831.55 : x
  2. Step 2: Convert to fraction form
    3,131.60/4,694.96 = 1,831.55/x
  3. Step 3: Cross multiply
    3,131.60x = 4,694.96 × 1,831.55
  4. Step 4: Simplify right side
    3,131.60x = 8,599,035.09
  5. Step 5: Solve for x
    x = 8,599,035.09/3,131.60
  6. Step 6: Final answer
    x = 2,745.90

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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.