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Finding the Fourth Proportional to 8,481.99, 11,702.43 and 5,125.80

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Solution

The fourth proportional to 8,481.99, 11,702.43 and 5,125.80 is: 7,071.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,481.99 : 11,702.43 = 5,125.80 : x
  2. Step 2: Convert to fraction form
    8,481.99/11,702.43 = 5,125.80/x
  3. Step 3: Cross multiply
    8,481.99x = 11,702.43 × 5,125.80
  4. Step 4: Simplify right side
    8,481.99x = 59,984,315.69
  5. Step 5: Solve for x
    x = 59,984,315.69/8,481.99
  6. Step 6: Final answer
    x = 7,071.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.