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Finding the Fourth Proportional to 8,757.26, 13,131.25 and 3,821.13

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Solution

The fourth proportional to 8,757.26, 13,131.25 and 3,821.13 is: 5,729.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.26 : 13,131.25 = 3,821.13 : x
  2. Step 2: Convert to fraction form
    8,757.26/13,131.25 = 3,821.13/x
  3. Step 3: Cross multiply
    8,757.26x = 13,131.25 × 3,821.13
  4. Step 4: Simplify right side
    8,757.26x = 50,176,236.59
  5. Step 5: Solve for x
    x = 50,176,236.59/8,757.26
  6. Step 6: Final answer
    x = 5,729.67

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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.