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Finding the Third Proportional to 6,590 and 13,408

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Solution

The third proportional to 6,590 and 13,408 is: 27,279.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,590 : 13,408 = 13,408 : x
  2. Step 2: Convert to fraction form
    6,590/13,408 = 13,408/x
  3. Step 3: Cross multiply
    6,590x = 13,408 × 13,408
  4. Step 4: Simplify right side
    6,590x = 179,774,464
  5. Step 5: Solve for x
    x = 179,774,464/6,590
  6. Step 6: Final answer
    x = 27,279.89

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.