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Finding the Fourth Proportional to 1,966.79, 2,713.50 and 1,294.97

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Solution

The fourth proportional to 1,966.79, 2,713.50 and 1,294.97 is: 1,786.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,966.79 : 2,713.50 = 1,294.97 : x
  2. Step 2: Convert to fraction form
    1,966.79/2,713.50 = 1,294.97/x
  3. Step 3: Cross multiply
    1,966.79x = 2,713.50 × 1,294.97
  4. Step 4: Simplify right side
    1,966.79x = 3,513,919.70
  5. Step 5: Solve for x
    x = 3,513,919.70/1,966.79
  6. Step 6: Final answer
    x = 1,786.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.