Home / 3,990.32-5,986.68-2,043.88

Finding the Fourth Proportional to 3,990.32, 5,986.68 and 2,043.88

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Solution

The fourth proportional to 3,990.32, 5,986.68 and 2,043.88 is: 3,066.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.32 : 5,986.68 = 2,043.88 : x
  2. Step 2: Convert to fraction form
    3,990.32/5,986.68 = 2,043.88/x
  3. Step 3: Cross multiply
    3,990.32x = 5,986.68 × 2,043.88
  4. Step 4: Simplify right side
    3,990.32x = 12,236,055.52
  5. Step 5: Solve for x
    x = 12,236,055.52/3,990.32
  6. Step 6: Final answer
    x = 3,066.43

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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.