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Finding the Third Proportional to 3,178.13 and 4,380.75

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Solution

The third proportional to 3,178.13 and 4,380.75 is: 6,038.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.13 : 4,380.75 = 4,380.75 : x
  2. Step 2: Convert to fraction form
    3,178.13/4,380.75 = 4,380.75/x
  3. Step 3: Cross multiply
    3,178.13x = 4,380.75 × 4,380.75
  4. Step 4: Simplify right side
    3,178.13x = 19,190,970.56
  5. Step 5: Solve for x
    x = 19,190,970.56/3,178.13
  6. Step 6: Final answer
    x = 6,038.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.