Home / 2,831.25-4,238.96-2,135.74

Finding the Fourth Proportional to 2,831.25, 4,238.96 and 2,135.74

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Solution

The fourth proportional to 2,831.25, 4,238.96 and 2,135.74 is: 3,197.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.25 : 4,238.96 = 2,135.74 : x
  2. Step 2: Convert to fraction form
    2,831.25/4,238.96 = 2,135.74/x
  3. Step 3: Cross multiply
    2,831.25x = 4,238.96 × 2,135.74
  4. Step 4: Simplify right side
    2,831.25x = 9,053,316.43
  5. Step 5: Solve for x
    x = 9,053,316.43/2,831.25
  6. Step 6: Final answer
    x = 3,197.64

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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.