Home / 5,120.82-7,684.88-2,199.96

Finding the Fourth Proportional to 5,120.82, 7,684.88 and 2,199.96

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Solution

The fourth proportional to 5,120.82, 7,684.88 and 2,199.96 is: 3,301.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.82 : 7,684.88 = 2,199.96 : x
  2. Step 2: Convert to fraction form
    5,120.82/7,684.88 = 2,199.96/x
  3. Step 3: Cross multiply
    5,120.82x = 7,684.88 × 2,199.96
  4. Step 4: Simplify right side
    5,120.82x = 16,906,417.61
  5. Step 5: Solve for x
    x = 16,906,417.61/5,120.82
  6. Step 6: Final answer
    x = 3,301.51

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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.