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Finding the Fourth Proportional to 8,231.88, 11,359.99 and 4,505.88

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Solution

The fourth proportional to 8,231.88, 11,359.99 and 4,505.88 is: 6,218.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,231.88 : 11,359.99 = 4,505.88 : x
  2. Step 2: Convert to fraction form
    8,231.88/11,359.99 = 4,505.88/x
  3. Step 3: Cross multiply
    8,231.88x = 11,359.99 × 4,505.88
  4. Step 4: Simplify right side
    8,231.88x = 51,186,751.74
  5. Step 5: Solve for x
    x = 51,186,751.74/8,231.88
  6. Step 6: Final answer
    x = 6,218.11

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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.