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Finding the Fourth Proportional to 6,649.44, 9,174.24 and 3,995.92

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Solution

The fourth proportional to 6,649.44, 9,174.24 and 3,995.92 is: 5,513.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,649.44 : 9,174.24 = 3,995.92 : x
  2. Step 2: Convert to fraction form
    6,649.44/9,174.24 = 3,995.92/x
  3. Step 3: Cross multiply
    6,649.44x = 9,174.24 × 3,995.92
  4. Step 4: Simplify right side
    6,649.44x = 36,659,529.10
  5. Step 5: Solve for x
    x = 36,659,529.10/6,649.44
  6. Step 6: Final answer
    x = 5,513.18

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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.