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Finding the Third Proportional to 7,405 and 11,258

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Solution

The third proportional to 7,405 and 11,258 is: 17,115.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,405 : 11,258 = 11,258 : x
  2. Step 2: Convert to fraction form
    7,405/11,258 = 11,258/x
  3. Step 3: Cross multiply
    7,405x = 11,258 × 11,258
  4. Step 4: Simplify right side
    7,405x = 126,742,564
  5. Step 5: Solve for x
    x = 126,742,564/7,405
  6. Step 6: Final answer
    x = 17,115.81

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.