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Finding the Fourth Proportional to 1,952.59, 2,691.78 and 1,392.09

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Solution

The fourth proportional to 1,952.59, 2,691.78 and 1,392.09 is: 1,919.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,952.59 : 2,691.78 = 1,392.09 : x
  2. Step 2: Convert to fraction form
    1,952.59/2,691.78 = 1,392.09/x
  3. Step 3: Cross multiply
    1,952.59x = 2,691.78 × 1,392.09
  4. Step 4: Simplify right side
    1,952.59x = 3,747,192.73
  5. Step 5: Solve for x
    x = 3,747,192.73/1,952.59
  6. Step 6: Final answer
    x = 1,919.08

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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.