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Finding the Third Proportional to 3,115.88 and 6,720.94

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Solution

The third proportional to 3,115.88 and 6,720.94 is: 14,497.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.88 : 6,720.94 = 6,720.94 : x
  2. Step 2: Convert to fraction form
    3,115.88/6,720.94 = 6,720.94/x
  3. Step 3: Cross multiply
    3,115.88x = 6,720.94 × 6,720.94
  4. Step 4: Simplify right side
    3,115.88x = 45,171,000.88
  5. Step 5: Solve for x
    x = 45,171,000.88/3,115.88
  6. Step 6: Final answer
    x = 14,497.05

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.