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Finding the Fourth Proportional to 8,168.93, 12,246.80 and 3,168.72

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Solution

The fourth proportional to 8,168.93, 12,246.80 and 3,168.72 is: 4,750.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,168.93 : 12,246.80 = 3,168.72 : x
  2. Step 2: Convert to fraction form
    8,168.93/12,246.80 = 3,168.72/x
  3. Step 3: Cross multiply
    8,168.93x = 12,246.80 × 3,168.72
  4. Step 4: Simplify right side
    8,168.93x = 38,806,684.65
  5. Step 5: Solve for x
    x = 38,806,684.65/8,168.93
  6. Step 6: Final answer
    x = 4,750.52

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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.