Home / 5,620.56-8,425.97-2,155.38

Finding the Fourth Proportional to 5,620.56, 8,425.97 and 2,155.38

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Solution

The fourth proportional to 5,620.56, 8,425.97 and 2,155.38 is: 3,231.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,620.56 : 8,425.97 = 2,155.38 : x
  2. Step 2: Convert to fraction form
    5,620.56/8,425.97 = 2,155.38/x
  3. Step 3: Cross multiply
    5,620.56x = 8,425.97 × 2,155.38
  4. Step 4: Simplify right side
    5,620.56x = 18,161,167.22
  5. Step 5: Solve for x
    x = 18,161,167.22/5,620.56
  6. Step 6: Final answer
    x = 3,231.20

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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.