Home / 5,819.80-8,727.52-2,120.80

Finding the Fourth Proportional to 5,819.80, 8,727.52 and 2,120.80

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Solution

The fourth proportional to 5,819.80, 8,727.52 and 2,120.80 is: 3,180.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,819.80 : 8,727.52 = 2,120.80 : x
  2. Step 2: Convert to fraction form
    5,819.80/8,727.52 = 2,120.80/x
  3. Step 3: Cross multiply
    5,819.80x = 8,727.52 × 2,120.80
  4. Step 4: Simplify right side
    5,819.80x = 18,509,324.42
  5. Step 5: Solve for x
    x = 18,509,324.42/5,819.80
  6. Step 6: Final answer
    x = 3,180.41

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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.