Home / 8,131.25-11,221.17-4,405.25

Finding the Fourth Proportional to 8,131.25, 11,221.17 and 4,405.25

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Solution

The fourth proportional to 8,131.25, 11,221.17 and 4,405.25 is: 6,079.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,131.25 : 11,221.17 = 4,405.25 : x
  2. Step 2: Convert to fraction form
    8,131.25/11,221.17 = 4,405.25/x
  3. Step 3: Cross multiply
    8,131.25x = 11,221.17 × 4,405.25
  4. Step 4: Simplify right side
    8,131.25x = 49,432,059.14
  5. Step 5: Solve for x
    x = 49,432,059.14/8,131.25
  6. Step 6: Final answer
    x = 6,079.27

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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.