Home / 3,589.28-5,382.24-2,128.64

Finding the Fourth Proportional to 3,589.28, 5,382.24 and 2,128.64

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Solution

The fourth proportional to 3,589.28, 5,382.24 and 2,128.64 is: 3,191.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,589.28 : 5,382.24 = 2,128.64 : x
  2. Step 2: Convert to fraction form
    3,589.28/5,382.24 = 2,128.64/x
  3. Step 3: Cross multiply
    3,589.28x = 5,382.24 × 2,128.64
  4. Step 4: Simplify right side
    3,589.28x = 11,456,851.35
  5. Step 5: Solve for x
    x = 11,456,851.35/3,589.28
  6. Step 6: Final answer
    x = 3,191.96

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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.