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Finding the Fourth Proportional to 3,650.80, 5,476.20 and 3,305.20

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Solution

The fourth proportional to 3,650.80, 5,476.20 and 3,305.20 is: 4,957.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,650.80 : 5,476.20 = 3,305.20 : x
  2. Step 2: Convert to fraction form
    3,650.80/5,476.20 = 3,305.20/x
  3. Step 3: Cross multiply
    3,650.80x = 5,476.20 × 3,305.20
  4. Step 4: Simplify right side
    3,650.80x = 18,099,936.24
  5. Step 5: Solve for x
    x = 18,099,936.24/3,650.80
  6. Step 6: Final answer
    x = 4,957.80

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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.