Home / 1,896.21-2,616.44-1,399.28

Finding the Fourth Proportional to 1,896.21, 2,616.44 and 1,399.28

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Solution

The fourth proportional to 1,896.21, 2,616.44 and 1,399.28 is: 1,930.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,896.21 : 2,616.44 = 1,399.28 : x
  2. Step 2: Convert to fraction form
    1,896.21/2,616.44 = 1,399.28/x
  3. Step 3: Cross multiply
    1,896.21x = 2,616.44 × 1,399.28
  4. Step 4: Simplify right side
    1,896.21x = 3,661,112.08
  5. Step 5: Solve for x
    x = 3,661,112.08/1,896.21
  6. Step 6: Final answer
    x = 1,930.75

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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.