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Finding the Fourth Proportional to 1,794.28, 2,691.36 and 768.28

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Solution

The fourth proportional to 1,794.28, 2,691.36 and 768.28 is: 1,152.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,794.28 : 2,691.36 = 768.28 : x
  2. Step 2: Convert to fraction form
    1,794.28/2,691.36 = 768.28/x
  3. Step 3: Cross multiply
    1,794.28x = 2,691.36 × 768.28
  4. Step 4: Simplify right side
    1,794.28x = 2,067,718.06
  5. Step 5: Solve for x
    x = 2,067,718.06/1,794.28
  6. Step 6: Final answer
    x = 1,152.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.