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Finding the Third Proportional to 5,278.75 and 8,358.25

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Solution

The third proportional to 5,278.75 and 8,358.25 is: 13,234.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.75 : 8,358.25 = 8,358.25 : x
  2. Step 2: Convert to fraction form
    5,278.75/8,358.25 = 8,358.25/x
  3. Step 3: Cross multiply
    5,278.75x = 8,358.25 × 8,358.25
  4. Step 4: Simplify right side
    5,278.75x = 69,860,343.06
  5. Step 5: Solve for x
    x = 69,860,343.06/5,278.75
  6. Step 6: Final answer
    x = 13,234.26

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.