Home / 5,403.25-8,102.58-2,115.82

Finding the Fourth Proportional to 5,403.25, 8,102.58 and 2,115.82

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Solution

The fourth proportional to 5,403.25, 8,102.58 and 2,115.82 is: 3,172.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,403.25 : 8,102.58 = 2,115.82 : x
  2. Step 2: Convert to fraction form
    5,403.25/8,102.58 = 2,115.82/x
  3. Step 3: Cross multiply
    5,403.25x = 8,102.58 × 2,115.82
  4. Step 4: Simplify right side
    5,403.25x = 17,143,614.91
  5. Step 5: Solve for x
    x = 17,143,614.91/5,403.25
  6. Step 6: Final answer
    x = 3,172.83

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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.