Home / 5,217.26-7,199.80-3,121.88

Finding the Fourth Proportional to 5,217.26, 7,199.80 and 3,121.88

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Solution

The fourth proportional to 5,217.26, 7,199.80 and 3,121.88 is: 4,308.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,217.26 : 7,199.80 = 3,121.88 : x
  2. Step 2: Convert to fraction form
    5,217.26/7,199.80 = 3,121.88/x
  3. Step 3: Cross multiply
    5,217.26x = 7,199.80 × 3,121.88
  4. Step 4: Simplify right side
    5,217.26x = 22,476,911.62
  5. Step 5: Solve for x
    x = 22,476,911.62/5,217.26
  6. Step 6: Final answer
    x = 4,308.18

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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.