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Finding the Third Proportional to 5,190.75 and 8,238.38

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Solution

The third proportional to 5,190.75 and 8,238.38 is: 13,075.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.75 : 8,238.38 = 8,238.38 : x
  2. Step 2: Convert to fraction form
    5,190.75/8,238.38 = 8,238.38/x
  3. Step 3: Cross multiply
    5,190.75x = 8,238.38 × 8,238.38
  4. Step 4: Simplify right side
    5,190.75x = 67,870,822.64
  5. Step 5: Solve for x
    x = 67,870,822.64/5,190.75
  6. Step 6: Final answer
    x = 13,075.34

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.