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Finding the Third Proportional to 7,645 and 10,859

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Solution

The third proportional to 7,645 and 10,859 is: 15,424.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,645 : 10,859 = 10,859 : x
  2. Step 2: Convert to fraction form
    7,645/10,859 = 10,859/x
  3. Step 3: Cross multiply
    7,645x = 10,859 × 10,859
  4. Step 4: Simplify right side
    7,645x = 117,917,881
  5. Step 5: Solve for x
    x = 117,917,881/7,645
  6. Step 6: Final answer
    x = 15,424.18

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.