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Finding the Third Proportional to 1,851 and 4,009

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Solution

The third proportional to 1,851 and 4,009 is: 8,682.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,851 : 4,009 = 4,009 : x
  2. Step 2: Convert to fraction form
    1,851/4,009 = 4,009/x
  3. Step 3: Cross multiply
    1,851x = 4,009 × 4,009
  4. Step 4: Simplify right side
    1,851x = 16,072,081
  5. Step 5: Solve for x
    x = 16,072,081/1,851
  6. Step 6: Final answer
    x = 8,682.92

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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.