Home / 3,983.40-5,974.91-1,643.37

Finding the Fourth Proportional to 3,983.40, 5,974.91 and 1,643.37

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Solution

The fourth proportional to 3,983.40, 5,974.91 and 1,643.37 is: 2,464.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,983.40 : 5,974.91 = 1,643.37 : x
  2. Step 2: Convert to fraction form
    3,983.40/5,974.91 = 1,643.37/x
  3. Step 3: Cross multiply
    3,983.40x = 5,974.91 × 1,643.37
  4. Step 4: Simplify right side
    3,983.40x = 9,818,979.63
  5. Step 5: Solve for x
    x = 9,818,979.63/3,983.40
  6. Step 6: Final answer
    x = 2,464.97

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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.