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Finding the Fourth Proportional to 1,393.62, 2,089.61 and 960.27

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Solution

The fourth proportional to 1,393.62, 2,089.61 and 960.27 is: 1,439.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393.62 : 2,089.61 = 960.27 : x
  2. Step 2: Convert to fraction form
    1,393.62/2,089.61 = 960.27/x
  3. Step 3: Cross multiply
    1,393.62x = 2,089.61 × 960.27
  4. Step 4: Simplify right side
    1,393.62x = 2,006,589.79
  5. Step 5: Solve for x
    x = 2,006,589.79/1,393.62
  6. Step 6: Final answer
    x = 1,439.84

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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.