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Finding the Fourth Proportional to 6,287.41, 8,672.43 and 4,791.88

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Solution

The fourth proportional to 6,287.41, 8,672.43 and 4,791.88 is: 6,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,287.41 : 8,672.43 = 4,791.88 : x
  2. Step 2: Convert to fraction form
    6,287.41/8,672.43 = 4,791.88/x
  3. Step 3: Cross multiply
    6,287.41x = 8,672.43 × 4,791.88
  4. Step 4: Simplify right side
    6,287.41x = 41,557,243.87
  5. Step 5: Solve for x
    x = 41,557,243.87/6,287.41
  6. Step 6: Final answer
    x = 6,609.60

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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.