Home / 3,221.78-4,445.40-1,824.26

Finding the Fourth Proportional to 3,221.78, 4,445.40 and 1,824.26

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Solution

The fourth proportional to 3,221.78, 4,445.40 and 1,824.26 is: 2,517.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.78 : 4,445.40 = 1,824.26 : x
  2. Step 2: Convert to fraction form
    3,221.78/4,445.40 = 1,824.26/x
  3. Step 3: Cross multiply
    3,221.78x = 4,445.40 × 1,824.26
  4. Step 4: Simplify right side
    3,221.78x = 8,109,565.40
  5. Step 5: Solve for x
    x = 8,109,565.40/3,221.78
  6. Step 6: Final answer
    x = 2,517.11

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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.