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Finding the Third Proportional to 7,280 and 11,544

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Solution

The third proportional to 7,280 and 11,544 is: 18,305.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,280 : 11,544 = 11,544 : x
  2. Step 2: Convert to fraction form
    7,280/11,544 = 11,544/x
  3. Step 3: Cross multiply
    7,280x = 11,544 × 11,544
  4. Step 4: Simplify right side
    7,280x = 133,263,936
  5. Step 5: Solve for x
    x = 133,263,936/7,280
  6. Step 6: Final answer
    x = 18,305.49

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.