Home / 3,986.75-5,981.09-1,250.75

Finding the Fourth Proportional to 3,986.75, 5,981.09 and 1,250.75

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Solution

The fourth proportional to 3,986.75, 5,981.09 and 1,250.75 is: 1,876.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.75 : 5,981.09 = 1,250.75 : x
  2. Step 2: Convert to fraction form
    3,986.75/5,981.09 = 1,250.75/x
  3. Step 3: Cross multiply
    3,986.75x = 5,981.09 × 1,250.75
  4. Step 4: Simplify right side
    3,986.75x = 7,480,842.06
  5. Step 5: Solve for x
    x = 7,480,842.06/3,986.75
  6. Step 6: Final answer
    x = 1,876.43

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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.