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Finding the Fourth Proportional to 8,169.74, 12,256.45 and 2,975.57

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Solution

The fourth proportional to 8,169.74, 12,256.45 and 2,975.57 is: 4,464.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,169.74 : 12,256.45 = 2,975.57 : x
  2. Step 2: Convert to fraction form
    8,169.74/12,256.45 = 2,975.57/x
  3. Step 3: Cross multiply
    8,169.74x = 12,256.45 × 2,975.57
  4. Step 4: Simplify right side
    8,169.74x = 36,469,848.77
  5. Step 5: Solve for x
    x = 36,469,848.77/8,169.74
  6. Step 6: Final answer
    x = 4,464.02

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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.