Home / 6,519.80-9,778.70-2,137.26

Finding the Fourth Proportional to 6,519.80, 9,778.70 and 2,137.26

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Solution

The fourth proportional to 6,519.80, 9,778.70 and 2,137.26 is: 3,205.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,519.80 : 9,778.70 = 2,137.26 : x
  2. Step 2: Convert to fraction form
    6,519.80/9,778.70 = 2,137.26/x
  3. Step 3: Cross multiply
    6,519.80x = 9,778.70 × 2,137.26
  4. Step 4: Simplify right side
    6,519.80x = 20,899,624.36
  5. Step 5: Solve for x
    x = 20,899,624.36/6,519.80
  6. Step 6: Final answer
    x = 3,205.56

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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.