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Finding the Third Proportional to 7,850 and 18,158

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Solution

The third proportional to 7,850 and 18,158 is: 42,001.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,850 : 18,158 = 18,158 : x
  2. Step 2: Convert to fraction form
    7,850/18,158 = 18,158/x
  3. Step 3: Cross multiply
    7,850x = 18,158 × 18,158
  4. Step 4: Simplify right side
    7,850x = 329,712,964
  5. Step 5: Solve for x
    x = 329,712,964/7,850
  6. Step 6: Final answer
    x = 42,001.65

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.