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Finding the Third Proportional to 8,740 and 19,120

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Solution

The third proportional to 8,740 and 19,120 is: 41,827.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,740 : 19,120 = 19,120 : x
  2. Step 2: Convert to fraction form
    8,740/19,120 = 19,120/x
  3. Step 3: Cross multiply
    8,740x = 19,120 × 19,120
  4. Step 4: Simplify right side
    8,740x = 365,574,400
  5. Step 5: Solve for x
    x = 365,574,400/8,740
  6. Step 6: Final answer
    x = 41,827.73

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.