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Finding the Fourth Proportional to 8,396.82, 12,583.89 and 3,199.86

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Solution

The fourth proportional to 8,396.82, 12,583.89 and 3,199.86 is: 4,795.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,396.82 : 12,583.89 = 3,199.86 : x
  2. Step 2: Convert to fraction form
    8,396.82/12,583.89 = 3,199.86/x
  3. Step 3: Cross multiply
    8,396.82x = 12,583.89 × 3,199.86
  4. Step 4: Simplify right side
    8,396.82x = 40,266,686.26
  5. Step 5: Solve for x
    x = 40,266,686.26/8,396.82
  6. Step 6: Final answer
    x = 4,795.47

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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.