Home / 5,475.99-8,200.81-3,128.88

Finding the Fourth Proportional to 5,475.99, 8,200.81 and 3,128.88

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Solution

The fourth proportional to 5,475.99, 8,200.81 and 3,128.88 is: 4,685.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,475.99 : 8,200.81 = 3,128.88 : x
  2. Step 2: Convert to fraction form
    5,475.99/8,200.81 = 3,128.88/x
  3. Step 3: Cross multiply
    5,475.99x = 8,200.81 × 3,128.88
  4. Step 4: Simplify right side
    5,475.99x = 25,659,350.39
  5. Step 5: Solve for x
    x = 25,659,350.39/5,475.99
  6. Step 6: Final answer
    x = 4,685.79

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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.