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Finding the Third Proportional to 1,339.88 and 2,910.09

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Solution

The third proportional to 1,339.88 and 2,910.09 is: 6,320.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339.88 : 2,910.09 = 2,910.09 : x
  2. Step 2: Convert to fraction form
    1,339.88/2,910.09 = 2,910.09/x
  3. Step 3: Cross multiply
    1,339.88x = 2,910.09 × 2,910.09
  4. Step 4: Simplify right side
    1,339.88x = 8,468,645.63
  5. Step 5: Solve for x
    x = 8,468,645.63/1,339.88
  6. Step 6: Final answer
    x = 6,320.47

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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.