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Finding the Third Proportional to 1,870 and 3,645

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Solution

The third proportional to 1,870 and 3,645 is: 7,104.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,870 : 3,645 = 3,645 : x
  2. Step 2: Convert to fraction form
    1,870/3,645 = 3,645/x
  3. Step 3: Cross multiply
    1,870x = 3,645 × 3,645
  4. Step 4: Simplify right side
    1,870x = 13,286,025
  5. Step 5: Solve for x
    x = 13,286,025/1,870
  6. Step 6: Final answer
    x = 7,104.83

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.