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Finding the Third Proportional to 1,980.07 and 2,939.73

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Solution

The third proportional to 1,980.07 and 2,939.73 is: 4,364.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.07 : 2,939.73 = 2,939.73 : x
  2. Step 2: Convert to fraction form
    1,980.07/2,939.73 = 2,939.73/x
  3. Step 3: Cross multiply
    1,980.07x = 2,939.73 × 2,939.73
  4. Step 4: Simplify right side
    1,980.07x = 8,642,015.23
  5. Step 5: Solve for x
    x = 8,642,015.23/1,980.07
  6. Step 6: Final answer
    x = 4,364.50

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.