Home / 5,640.20-8,458.68-1,942.28

Finding the Fourth Proportional to 5,640.20, 8,458.68 and 1,942.28

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Solution

The fourth proportional to 5,640.20, 8,458.68 and 1,942.28 is: 2,912.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,640.20 : 8,458.68 = 1,942.28 : x
  2. Step 2: Convert to fraction form
    5,640.20/8,458.68 = 1,942.28/x
  3. Step 3: Cross multiply
    5,640.20x = 8,458.68 × 1,942.28
  4. Step 4: Simplify right side
    5,640.20x = 16,429,124.99
  5. Step 5: Solve for x
    x = 16,429,124.99/5,640.20
  6. Step 6: Final answer
    x = 2,912.86

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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.