Home / 3,989.12-5,984.66-2,009.88

Finding the Fourth Proportional to 3,989.12, 5,984.66 and 2,009.88

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Solution

The fourth proportional to 3,989.12, 5,984.66 and 2,009.88 is: 3,015.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.12 : 5,984.66 = 2,009.88 : x
  2. Step 2: Convert to fraction form
    3,989.12/5,984.66 = 2,009.88/x
  3. Step 3: Cross multiply
    3,989.12x = 5,984.66 × 2,009.88
  4. Step 4: Simplify right side
    3,989.12x = 12,028,453.47
  5. Step 5: Solve for x
    x = 12,028,453.47/3,989.12
  6. Step 6: Final answer
    x = 3,015.32

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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.