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Finding the Third Proportional to 5,318 and 9,788

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Solution

The third proportional to 5,318 and 9,788 is: 18,015.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318 : 9,788 = 9,788 : x
  2. Step 2: Convert to fraction form
    5,318/9,788 = 9,788/x
  3. Step 3: Cross multiply
    5,318x = 9,788 × 9,788
  4. Step 4: Simplify right side
    5,318x = 95,804,944
  5. Step 5: Solve for x
    x = 95,804,944/5,318
  6. Step 6: Final answer
    x = 18,015.22

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Why These Related Problems?

These problems maintain the same ratio (1.84) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.