Home / 8,205.26-12,309.90-3,821.80

Finding the Fourth Proportional to 8,205.26, 12,309.90 and 3,821.80

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Solution

The fourth proportional to 8,205.26, 12,309.90 and 3,821.80 is: 5,733.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,205.26 : 12,309.90 = 3,821.80 : x
  2. Step 2: Convert to fraction form
    8,205.26/12,309.90 = 3,821.80/x
  3. Step 3: Cross multiply
    8,205.26x = 12,309.90 × 3,821.80
  4. Step 4: Simplify right side
    8,205.26x = 47,045,975.82
  5. Step 5: Solve for x
    x = 47,045,975.82/8,205.26
  6. Step 6: Final answer
    x = 5,733.64

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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.