Home / 8,119.91-11,200.34-6,228.63

Finding the Fourth Proportional to 8,119.91, 11,200.34 and 6,228.63

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Solution

The fourth proportional to 8,119.91, 11,200.34 and 6,228.63 is: 8,591.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.91 : 11,200.34 = 6,228.63 : x
  2. Step 2: Convert to fraction form
    8,119.91/11,200.34 = 6,228.63/x
  3. Step 3: Cross multiply
    8,119.91x = 11,200.34 × 6,228.63
  4. Step 4: Simplify right side
    8,119.91x = 69,762,789.31
  5. Step 5: Solve for x
    x = 69,762,789.31/8,119.91
  6. Step 6: Final answer
    x = 8,591.57

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Half scale
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Double scale
Find fourth proportional to 8,120.91, 11,201.72 and 6,229.63
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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.