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Finding the Fourth Proportional to 8,236.80, 12,356 and 2,393.28

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Solution

The fourth proportional to 8,236.80, 12,356 and 2,393.28 is: 3,590.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,236.80 : 12,356 = 2,393.28 : x
  2. Step 2: Convert to fraction form
    8,236.80/12,356 = 2,393.28/x
  3. Step 3: Cross multiply
    8,236.80x = 12,356 × 2,393.28
  4. Step 4: Simplify right side
    8,236.80x = 29,571,367.68
  5. Step 5: Solve for x
    x = 29,571,367.68/8,236.80
  6. Step 6: Final answer
    x = 3,590.15

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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.