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Finding the Third Proportional to 3,558.44 and 7,643.38

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Solution

The third proportional to 3,558.44 and 7,643.38 is: 16,417.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,558.44 : 7,643.38 = 7,643.38 : x
  2. Step 2: Convert to fraction form
    3,558.44/7,643.38 = 7,643.38/x
  3. Step 3: Cross multiply
    3,558.44x = 7,643.38 × 7,643.38
  4. Step 4: Simplify right side
    3,558.44x = 58,421,181.39
  5. Step 5: Solve for x
    x = 58,421,181.39/3,558.44
  6. Step 6: Final answer
    x = 16,417.65

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.