Home / 3,986.75-5,981.36-2,040.32

Finding the Fourth Proportional to 3,986.75, 5,981.36 and 2,040.32

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Solution

The fourth proportional to 3,986.75, 5,981.36 and 2,040.32 is: 3,061.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.75 : 5,981.36 = 2,040.32 : x
  2. Step 2: Convert to fraction form
    3,986.75/5,981.36 = 2,040.32/x
  3. Step 3: Cross multiply
    3,986.75x = 5,981.36 × 2,040.32
  4. Step 4: Simplify right side
    3,986.75x = 12,203,893.19
  5. Step 5: Solve for x
    x = 12,203,893.19/3,986.75
  6. Step 6: Final answer
    x = 3,061.11

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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.