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Finding the Third Proportional to 7,680 and 16,646

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Solution

The third proportional to 7,680 and 16,646 is: 36,079.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680 : 16,646 = 16,646 : x
  2. Step 2: Convert to fraction form
    7,680/16,646 = 16,646/x
  3. Step 3: Cross multiply
    7,680x = 16,646 × 16,646
  4. Step 4: Simplify right side
    7,680x = 277,089,316
  5. Step 5: Solve for x
    x = 277,089,316/7,680
  6. Step 6: Final answer
    x = 36,079.34

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.