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Finding the Third Proportional to 2,643.75 and 5,630.44

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Solution

The third proportional to 2,643.75 and 5,630.44 is: 11,991.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,643.75 : 5,630.44 = 5,630.44 : x
  2. Step 2: Convert to fraction form
    2,643.75/5,630.44 = 5,630.44/x
  3. Step 3: Cross multiply
    2,643.75x = 5,630.44 × 5,630.44
  4. Step 4: Simplify right side
    2,643.75x = 31,701,826.44
  5. Step 5: Solve for x
    x = 31,701,826.44/2,643.75
  6. Step 6: Final answer
    x = 11,991.23

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.