Home / 3,980.88-5,969.94-2,005.75

Finding the Fourth Proportional to 3,980.88, 5,969.94 and 2,005.75

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Solution

The fourth proportional to 3,980.88, 5,969.94 and 2,005.75 is: 3,007.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.88 : 5,969.94 = 2,005.75 : x
  2. Step 2: Convert to fraction form
    3,980.88/5,969.94 = 2,005.75/x
  3. Step 3: Cross multiply
    3,980.88x = 5,969.94 × 2,005.75
  4. Step 4: Simplify right side
    3,980.88x = 11,974,207.16
  5. Step 5: Solve for x
    x = 11,974,207.16/3,980.88
  6. Step 6: Final answer
    x = 3,007.93

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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.