Home / 3,421.88-5,132.86-1,081.90

Finding the Fourth Proportional to 3,421.88, 5,132.86 and 1,081.90

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Solution

The fourth proportional to 3,421.88, 5,132.86 and 1,081.90 is: 1,622.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.88 : 5,132.86 = 1,081.90 : x
  2. Step 2: Convert to fraction form
    3,421.88/5,132.86 = 1,081.90/x
  3. Step 3: Cross multiply
    3,421.88x = 5,132.86 × 1,081.90
  4. Step 4: Simplify right side
    3,421.88x = 5,553,241.23
  5. Step 5: Solve for x
    x = 5,553,241.23/3,421.88
  6. Step 6: Final answer
    x = 1,622.86

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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.