Home / 1,381.44-1,907.82-1,183.80

Finding the Fourth Proportional to 1,381.44, 1,907.82 and 1,183.80

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Solution

The fourth proportional to 1,381.44, 1,907.82 and 1,183.80 is: 1,634.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381.44 : 1,907.82 = 1,183.80 : x
  2. Step 2: Convert to fraction form
    1,381.44/1,907.82 = 1,183.80/x
  3. Step 3: Cross multiply
    1,381.44x = 1,907.82 × 1,183.80
  4. Step 4: Simplify right side
    1,381.44x = 2,258,477.32
  5. Step 5: Solve for x
    x = 2,258,477.32/1,381.44
  6. Step 6: Final answer
    x = 1,634.87

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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.