Home / 3,228-4,454.36-1,811.42

Finding the Fourth Proportional to 3,228, 4,454.36 and 1,811.42

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Solution

The fourth proportional to 3,228, 4,454.36 and 1,811.42 is: 2,499.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,228 : 4,454.36 = 1,811.42 : x
  2. Step 2: Convert to fraction form
    3,228/4,454.36 = 1,811.42/x
  3. Step 3: Cross multiply
    3,228x = 4,454.36 × 1,811.42
  4. Step 4: Simplify right side
    3,228x = 8,068,716.79
  5. Step 5: Solve for x
    x = 8,068,716.79/3,228
  6. Step 6: Final answer
    x = 2,499.60

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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.