Home / 3,914.80-5,402.32-2,321.44

Finding the Fourth Proportional to 3,914.80, 5,402.32 and 2,321.44

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Solution

The fourth proportional to 3,914.80, 5,402.32 and 2,321.44 is: 3,203.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,914.80 : 5,402.32 = 2,321.44 : x
  2. Step 2: Convert to fraction form
    3,914.80/5,402.32 = 2,321.44/x
  3. Step 3: Cross multiply
    3,914.80x = 5,402.32 × 2,321.44
  4. Step 4: Simplify right side
    3,914.80x = 12,541,161.74
  5. Step 5: Solve for x
    x = 12,541,161.74/3,914.80
  6. Step 6: Final answer
    x = 3,203.53

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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.