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Finding the Third Proportional to 3,148.88 and 6,639.19

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Solution

The third proportional to 3,148.88 and 6,639.19 is: 13,998.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,148.88 : 6,639.19 = 6,639.19 : x
  2. Step 2: Convert to fraction form
    3,148.88/6,639.19 = 6,639.19/x
  3. Step 3: Cross multiply
    3,148.88x = 6,639.19 × 6,639.19
  4. Step 4: Simplify right side
    3,148.88x = 44,078,810.66
  5. Step 5: Solve for x
    x = 44,078,810.66/3,148.88
  6. Step 6: Final answer
    x = 13,998.27

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.