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Finding the Third Proportional to 931.75 and 1,940.13

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Solution

The third proportional to 931.75 and 1,940.13 is: 4,039.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    931.75 : 1,940.13 = 1,940.13 : x
  2. Step 2: Convert to fraction form
    931.75/1,940.13 = 1,940.13/x
  3. Step 3: Cross multiply
    931.75x = 1,940.13 × 1,940.13
  4. Step 4: Simplify right side
    931.75x = 3,764,085.02
  5. Step 5: Solve for x
    x = 3,764,085.02/931.75
  6. Step 6: Final answer
    x = 4,039.80

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.