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Finding the Third Proportional to 979.50 and 2,310

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Solution

The third proportional to 979.50 and 2,310 is: 5,447.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    979.50 : 2,310 = 2,310 : x
  2. Step 2: Convert to fraction form
    979.50/2,310 = 2,310/x
  3. Step 3: Cross multiply
    979.50x = 2,310 × 2,310
  4. Step 4: Simplify right side
    979.50x = 5,336,100
  5. Step 5: Solve for x
    x = 5,336,100/979.50
  6. Step 6: Final answer
    x = 5,447.78

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.