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Finding the Third Proportional to 3,447.56 and 5,178.94

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Solution

The third proportional to 3,447.56 and 5,178.94 is: 7,779.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,447.56 : 5,178.94 = 5,178.94 : x
  2. Step 2: Convert to fraction form
    3,447.56/5,178.94 = 5,178.94/x
  3. Step 3: Cross multiply
    3,447.56x = 5,178.94 × 5,178.94
  4. Step 4: Simplify right side
    3,447.56x = 26,821,393.63
  5. Step 5: Solve for x
    x = 26,821,393.63/3,447.56
  6. Step 6: Final answer
    x = 7,779.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.