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Finding the Third Proportional to 7,788 and 18,654

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Solution

The third proportional to 7,788 and 18,654 is: 44,680.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,788 : 18,654 = 18,654 : x
  2. Step 2: Convert to fraction form
    7,788/18,654 = 18,654/x
  3. Step 3: Cross multiply
    7,788x = 18,654 × 18,654
  4. Step 4: Simplify right side
    7,788x = 347,971,716
  5. Step 5: Solve for x
    x = 347,971,716/7,788
  6. Step 6: Final answer
    x = 44,680.50

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Why These Related Problems?

These problems maintain the same ratio (2.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.