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Finding the Fourth Proportional to 8,168, 12,252.18 and 3,551

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Solution

The fourth proportional to 8,168, 12,252.18 and 3,551 is: 5,326.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,168 : 12,252.18 = 3,551 : x
  2. Step 2: Convert to fraction form
    8,168/12,252.18 = 3,551/x
  3. Step 3: Cross multiply
    8,168x = 12,252.18 × 3,551
  4. Step 4: Simplify right side
    8,168x = 43,507,491.18
  5. Step 5: Solve for x
    x = 43,507,491.18/8,168
  6. Step 6: Final answer
    x = 5,326.58

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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.