Home / 8,257.75-12,394.11-5,143.80

Finding the Fourth Proportional to 8,257.75, 12,394.11 and 5,143.80

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Solution

The fourth proportional to 8,257.75, 12,394.11 and 5,143.80 is: 7,720.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,257.75 : 12,394.11 = 5,143.80 : x
  2. Step 2: Convert to fraction form
    8,257.75/12,394.11 = 5,143.80/x
  3. Step 3: Cross multiply
    8,257.75x = 12,394.11 × 5,143.80
  4. Step 4: Simplify right side
    8,257.75x = 63,752,888.79
  5. Step 5: Solve for x
    x = 63,752,888.79/8,257.75
  6. Step 6: Final answer
    x = 7,720.37

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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.