Home / 8,131.56-11,221.44-4,405.56

Finding the Fourth Proportional to 8,131.56, 11,221.44 and 4,405.56

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Solution

The fourth proportional to 8,131.56, 11,221.44 and 4,405.56 is: 6,079.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,131.56 : 11,221.44 = 4,405.56 : x
  2. Step 2: Convert to fraction form
    8,131.56/11,221.44 = 4,405.56/x
  3. Step 3: Cross multiply
    8,131.56x = 11,221.44 × 4,405.56
  4. Step 4: Simplify right side
    8,131.56x = 49,436,727.21
  5. Step 5: Solve for x
    x = 49,436,727.21/8,131.56
  6. Step 6: Final answer
    x = 6,079.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.