Home / 1,392.44-2,084.27-1,115.42

Finding the Fourth Proportional to 1,392.44, 2,084.27 and 1,115.42

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Solution

The fourth proportional to 1,392.44, 2,084.27 and 1,115.42 is: 1,669.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392.44 : 2,084.27 = 1,115.42 : x
  2. Step 2: Convert to fraction form
    1,392.44/2,084.27 = 1,115.42/x
  3. Step 3: Cross multiply
    1,392.44x = 2,084.27 × 1,115.42
  4. Step 4: Simplify right side
    1,392.44x = 2,324,820.44
  5. Step 5: Solve for x
    x = 2,324,820.44/1,392.44
  6. Step 6: Final answer
    x = 1,669.61

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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.