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Finding the Third Proportional to 7,939 and 15,158

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Solution

The third proportional to 7,939 and 15,158 is: 28,941.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939 : 15,158 = 15,158 : x
  2. Step 2: Convert to fraction form
    7,939/15,158 = 15,158/x
  3. Step 3: Cross multiply
    7,939x = 15,158 × 15,158
  4. Step 4: Simplify right side
    7,939x = 229,764,964
  5. Step 5: Solve for x
    x = 229,764,964/7,939
  6. Step 6: Final answer
    x = 28,941.30

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Why These Related Problems?

These problems maintain the same ratio (1.91) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.