Home / 5,418.15-8,120.04-2,785.54

Finding the Fourth Proportional to 5,418.15, 8,120.04 and 2,785.54

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Solution

The fourth proportional to 5,418.15, 8,120.04 and 2,785.54 is: 4,174.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.15 : 8,120.04 = 2,785.54 : x
  2. Step 2: Convert to fraction form
    5,418.15/8,120.04 = 2,785.54/x
  3. Step 3: Cross multiply
    5,418.15x = 8,120.04 × 2,785.54
  4. Step 4: Simplify right side
    5,418.15x = 22,618,696.22
  5. Step 5: Solve for x
    x = 22,618,696.22/5,418.15
  6. Step 6: Final answer
    x = 4,174.62

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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.