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Finding the Third Proportional to 2,920.50 and 6,408

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Solution

The third proportional to 2,920.50 and 6,408 is: 14,060.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.50 : 6,408 = 6,408 : x
  2. Step 2: Convert to fraction form
    2,920.50/6,408 = 6,408/x
  3. Step 3: Cross multiply
    2,920.50x = 6,408 × 6,408
  4. Step 4: Simplify right side
    2,920.50x = 41,062,464
  5. Step 5: Solve for x
    x = 41,062,464/2,920.50
  6. Step 6: Final answer
    x = 14,060.08

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.