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Finding the Third Proportional to 3,558.38 and 5,317.88

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Solution

The third proportional to 3,558.38 and 5,317.88 is: 7,947.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,558.38 : 5,317.88 = 5,317.88 : x
  2. Step 2: Convert to fraction form
    3,558.38/5,317.88 = 5,317.88/x
  3. Step 3: Cross multiply
    3,558.38x = 5,317.88 × 5,317.88
  4. Step 4: Simplify right side
    3,558.38x = 28,279,794.52
  5. Step 5: Solve for x
    x = 28,279,794.52/3,558.38
  6. Step 6: Final answer
    x = 7,947.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.