Home / 3,986.24-5,980.80-2,039.36

Finding the Fourth Proportional to 3,986.24, 5,980.80 and 2,039.36

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Solution

The fourth proportional to 3,986.24, 5,980.80 and 2,039.36 is: 3,059.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.24 : 5,980.80 = 2,039.36 : x
  2. Step 2: Convert to fraction form
    3,986.24/5,980.80 = 2,039.36/x
  3. Step 3: Cross multiply
    3,986.24x = 5,980.80 × 2,039.36
  4. Step 4: Simplify right side
    3,986.24x = 12,197,004.29
  5. Step 5: Solve for x
    x = 12,197,004.29/3,986.24
  6. Step 6: Final answer
    x = 3,059.78

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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.