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Finding the Third Proportional to 3,515 and 7,807

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Solution

The third proportional to 3,515 and 7,807 is: 17,339.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,515 : 7,807 = 7,807 : x
  2. Step 2: Convert to fraction form
    3,515/7,807 = 7,807/x
  3. Step 3: Cross multiply
    3,515x = 7,807 × 7,807
  4. Step 4: Simplify right side
    3,515x = 60,949,249
  5. Step 5: Solve for x
    x = 60,949,249/3,515
  6. Step 6: Final answer
    x = 17,339.76

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.