Home / 6,500.70-9,745.07-2,115.90

Finding the Fourth Proportional to 6,500.70, 9,745.07 and 2,115.90

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Solution

The fourth proportional to 6,500.70, 9,745.07 and 2,115.90 is: 3,171.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,500.70 : 9,745.07 = 2,115.90 : x
  2. Step 2: Convert to fraction form
    6,500.70/9,745.07 = 2,115.90/x
  3. Step 3: Cross multiply
    6,500.70x = 9,745.07 × 2,115.90
  4. Step 4: Simplify right side
    6,500.70x = 20,619,583.03
  5. Step 5: Solve for x
    x = 20,619,583.03/6,500.70
  6. Step 6: Final answer
    x = 3,171.90

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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.