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Finding the Fourth Proportional to 11,392.80, 17,089.80 and 3,601

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Solution

The fourth proportional to 11,392.80, 17,089.80 and 3,601 is: 5,401.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,392.80 : 17,089.80 = 3,601 : x
  2. Step 2: Convert to fraction form
    11,392.80/17,089.80 = 3,601/x
  3. Step 3: Cross multiply
    11,392.80x = 17,089.80 × 3,601
  4. Step 4: Simplify right side
    11,392.80x = 61,540,369.80
  5. Step 5: Solve for x
    x = 61,540,369.80/11,392.80
  6. Step 6: Final answer
    x = 5,401.69

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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.