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Finding the Third Proportional to 5,278.50 and 7,392.75

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Solution

The third proportional to 5,278.50 and 7,392.75 is: 10,353.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.50 : 7,392.75 = 7,392.75 : x
  2. Step 2: Convert to fraction form
    5,278.50/7,392.75 = 7,392.75/x
  3. Step 3: Cross multiply
    5,278.50x = 7,392.75 × 7,392.75
  4. Step 4: Simplify right side
    5,278.50x = 54,652,752.56
  5. Step 5: Solve for x
    x = 54,652,752.56/5,278.50
  6. Step 6: Final answer
    x = 10,353.84

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.