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Finding the Fourth Proportional to 8,751.76, 13,122.82 and 5,981.56

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Solution

The fourth proportional to 8,751.76, 13,122.82 and 5,981.56 is: 8,969.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,751.76 : 13,122.82 = 5,981.56 : x
  2. Step 2: Convert to fraction form
    8,751.76/13,122.82 = 5,981.56/x
  3. Step 3: Cross multiply
    8,751.76x = 13,122.82 × 5,981.56
  4. Step 4: Simplify right side
    8,751.76x = 78,494,935.20
  5. Step 5: Solve for x
    x = 78,494,935.20/8,751.76
  6. Step 6: Final answer
    x = 8,969.05

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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.