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Finding the Third Proportional to 2,839 and 4,431.50

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Solution

The third proportional to 2,839 and 4,431.50 is: 6,917.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839 : 4,431.50 = 4,431.50 : x
  2. Step 2: Convert to fraction form
    2,839/4,431.50 = 4,431.50/x
  3. Step 3: Cross multiply
    2,839x = 4,431.50 × 4,431.50
  4. Step 4: Simplify right side
    2,839x = 19,638,192.25
  5. Step 5: Solve for x
    x = 19,638,192.25/2,839
  6. Step 6: Final answer
    x = 6,917.29

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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.