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Finding the Third Proportional to 4,487 and 7,003

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Solution

The third proportional to 4,487 and 7,003 is: 10,929.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,487 : 7,003 = 7,003 : x
  2. Step 2: Convert to fraction form
    4,487/7,003 = 7,003/x
  3. Step 3: Cross multiply
    4,487x = 7,003 × 7,003
  4. Step 4: Simplify right side
    4,487x = 49,042,009
  5. Step 5: Solve for x
    x = 49,042,009/4,487
  6. Step 6: Final answer
    x = 10,929.80

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.