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Finding the Third Proportional to 7,730 and 18,668

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Solution

The third proportional to 7,730 and 18,668 is: 45,083.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,730 : 18,668 = 18,668 : x
  2. Step 2: Convert to fraction form
    7,730/18,668 = 18,668/x
  3. Step 3: Cross multiply
    7,730x = 18,668 × 18,668
  4. Step 4: Simplify right side
    7,730x = 348,494,224
  5. Step 5: Solve for x
    x = 348,494,224/7,730
  6. Step 6: Final answer
    x = 45,083.34

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Why These Related Problems?

These problems maintain the same ratio (2.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.