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Finding the Third Proportional to 3,315.94 and 7,217.44

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Solution

The third proportional to 3,315.94 and 7,217.44 is: 15,709.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.94 : 7,217.44 = 7,217.44 : x
  2. Step 2: Convert to fraction form
    3,315.94/7,217.44 = 7,217.44/x
  3. Step 3: Cross multiply
    3,315.94x = 7,217.44 × 7,217.44
  4. Step 4: Simplify right side
    3,315.94x = 52,091,404.07
  5. Step 5: Solve for x
    x = 52,091,404.07/3,315.94
  6. Step 6: Final answer
    x = 15,709.40

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.