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Finding the Fourth Proportional to 6,236.28, 8,607.04 and 3,879.20

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Solution

The fourth proportional to 6,236.28, 8,607.04 and 3,879.20 is: 5,353.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,236.28 : 8,607.04 = 3,879.20 : x
  2. Step 2: Convert to fraction form
    6,236.28/8,607.04 = 3,879.20/x
  3. Step 3: Cross multiply
    6,236.28x = 8,607.04 × 3,879.20
  4. Step 4: Simplify right side
    6,236.28x = 33,388,429.57
  5. Step 5: Solve for x
    x = 33,388,429.57/6,236.28
  6. Step 6: Final answer
    x = 5,353.90

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Half scale
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Double scale
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Similar ratio
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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.