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Finding the Fourth Proportional to 8,388.72, 12,584.42 and 2,543.95

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Solution

The fourth proportional to 8,388.72, 12,584.42 and 2,543.95 is: 3,816.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,388.72 : 12,584.42 = 2,543.95 : x
  2. Step 2: Convert to fraction form
    8,388.72/12,584.42 = 2,543.95/x
  3. Step 3: Cross multiply
    8,388.72x = 12,584.42 × 2,543.95
  4. Step 4: Simplify right side
    8,388.72x = 32,014,135.26
  5. Step 5: Solve for x
    x = 32,014,135.26/8,388.72
  6. Step 6: Final answer
    x = 3,816.33

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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.