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Finding the Third Proportional to 7,163 and 7,787

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Solution

The third proportional to 7,163 and 7,787 is: 8,465.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,163 : 7,787 = 7,787 : x
  2. Step 2: Convert to fraction form
    7,163/7,787 = 7,787/x
  3. Step 3: Cross multiply
    7,163x = 7,787 × 7,787
  4. Step 4: Simplify right side
    7,163x = 60,637,369
  5. Step 5: Solve for x
    x = 60,637,369/7,163
  6. Step 6: Final answer
    x = 8,465.36

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.