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Finding the Fourth Proportional to 8,168, 11,272.80 and 4,856

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Solution

The fourth proportional to 8,168, 11,272.80 and 4,856 is: 6,701.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,168 : 11,272.80 = 4,856 : x
  2. Step 2: Convert to fraction form
    8,168/11,272.80 = 4,856/x
  3. Step 3: Cross multiply
    8,168x = 11,272.80 × 4,856
  4. Step 4: Simplify right side
    8,168x = 54,740,716.80
  5. Step 5: Solve for x
    x = 54,740,716.80/8,168
  6. Step 6: Final answer
    x = 6,701.85

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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.