Home / 8,105.05-12,157.57-4,201.25

Finding the Fourth Proportional to 8,105.05, 12,157.57 and 4,201.25

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Solution

The fourth proportional to 8,105.05, 12,157.57 and 4,201.25 is: 6,301.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,105.05 : 12,157.57 = 4,201.25 : x
  2. Step 2: Convert to fraction form
    8,105.05/12,157.57 = 4,201.25/x
  3. Step 3: Cross multiply
    8,105.05x = 12,157.57 × 4,201.25
  4. Step 4: Simplify right side
    8,105.05x = 51,076,990.96
  5. Step 5: Solve for x
    x = 51,076,990.96/8,105.05
  6. Step 6: Final answer
    x = 6,301.88

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.