Home / 8,965.14-13,447.74-3,121.80

Finding the Fourth Proportional to 8,965.14, 13,447.74 and 3,121.80

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Solution

The fourth proportional to 8,965.14, 13,447.74 and 3,121.80 is: 4,682.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,965.14 : 13,447.74 = 3,121.80 : x
  2. Step 2: Convert to fraction form
    8,965.14/13,447.74 = 3,121.80/x
  3. Step 3: Cross multiply
    8,965.14x = 13,447.74 × 3,121.80
  4. Step 4: Simplify right side
    8,965.14x = 41,981,154.73
  5. Step 5: Solve for x
    x = 41,981,154.73/8,965.14
  6. Step 6: Final answer
    x = 4,682.71

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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.