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Finding the Third Proportional to 3,913 and 5,079.75

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Solution

The third proportional to 3,913 and 5,079.75 is: 6,594.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913 : 5,079.75 = 5,079.75 : x
  2. Step 2: Convert to fraction form
    3,913/5,079.75 = 5,079.75/x
  3. Step 3: Cross multiply
    3,913x = 5,079.75 × 5,079.75
  4. Step 4: Simplify right side
    3,913x = 25,803,860.06
  5. Step 5: Solve for x
    x = 25,803,860.06/3,913
  6. Step 6: Final answer
    x = 6,594.39

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.