Home / 8,205.10-12,295.05-6,115.30

Finding the Fourth Proportional to 8,205.10, 12,295.05 and 6,115.30

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Solution

The fourth proportional to 8,205.10, 12,295.05 and 6,115.30 is: 9,163.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,205.10 : 12,295.05 = 6,115.30 : x
  2. Step 2: Convert to fraction form
    8,205.10/12,295.05 = 6,115.30/x
  3. Step 3: Cross multiply
    8,205.10x = 12,295.05 × 6,115.30
  4. Step 4: Simplify right side
    8,205.10x = 75,187,919.27
  5. Step 5: Solve for x
    x = 75,187,919.27/8,205.10
  6. Step 6: Final answer
    x = 9,163.56

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1.5x scale

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.