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Finding the Third Proportional to 7,784 and 18,356

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Solution

The third proportional to 7,784 and 18,356 is: 43,286.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,784 : 18,356 = 18,356 : x
  2. Step 2: Convert to fraction form
    7,784/18,356 = 18,356/x
  3. Step 3: Cross multiply
    7,784x = 18,356 × 18,356
  4. Step 4: Simplify right side
    7,784x = 336,942,736
  5. Step 5: Solve for x
    x = 336,942,736/7,784
  6. Step 6: Final answer
    x = 43,286.58

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.