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Finding the Fourth Proportional to 7,392.88, 11,092.20 and 3,286

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Solution

The fourth proportional to 7,392.88, 11,092.20 and 3,286 is: 4,930.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,392.88 : 11,092.20 = 3,286 : x
  2. Step 2: Convert to fraction form
    7,392.88/11,092.20 = 3,286/x
  3. Step 3: Cross multiply
    7,392.88x = 11,092.20 × 3,286
  4. Step 4: Simplify right side
    7,392.88x = 36,448,969.20
  5. Step 5: Solve for x
    x = 36,448,969.20/7,392.88
  6. Step 6: Final answer
    x = 4,930.28

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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.