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Finding the Third Proportional to 5,145.75 and 6,972.75

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Solution

The third proportional to 5,145.75 and 6,972.75 is: 9,448.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.75 : 6,972.75 = 6,972.75 : x
  2. Step 2: Convert to fraction form
    5,145.75/6,972.75 = 6,972.75/x
  3. Step 3: Cross multiply
    5,145.75x = 6,972.75 × 6,972.75
  4. Step 4: Simplify right side
    5,145.75x = 48,619,242.56
  5. Step 5: Solve for x
    x = 48,619,242.56/5,145.75
  6. Step 6: Final answer
    x = 9,448.43

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.