Home / 3,984.08-5,976.14-1,387.02

Finding the Fourth Proportional to 3,984.08, 5,976.14 and 1,387.02

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Solution

The fourth proportional to 3,984.08, 5,976.14 and 1,387.02 is: 2,080.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984.08 : 5,976.14 = 1,387.02 : x
  2. Step 2: Convert to fraction form
    3,984.08/5,976.14 = 1,387.02/x
  3. Step 3: Cross multiply
    3,984.08x = 5,976.14 × 1,387.02
  4. Step 4: Simplify right side
    3,984.08x = 8,289,025.70
  5. Step 5: Solve for x
    x = 8,289,025.70/3,984.08
  6. Step 6: Final answer
    x = 2,080.54

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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.