Home / 7,687.20-11,531.04-3,984.48

Finding the Fourth Proportional to 7,687.20, 11,531.04 and 3,984.48

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Solution

The fourth proportional to 7,687.20, 11,531.04 and 3,984.48 is: 5,976.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,687.20 : 11,531.04 = 3,984.48 : x
  2. Step 2: Convert to fraction form
    7,687.20/11,531.04 = 3,984.48/x
  3. Step 3: Cross multiply
    7,687.20x = 11,531.04 × 3,984.48
  4. Step 4: Simplify right side
    7,687.20x = 45,945,198.26
  5. Step 5: Solve for x
    x = 45,945,198.26/7,687.20
  6. Step 6: Final answer
    x = 5,976.84

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1.5x scale

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.