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Finding the Fourth Proportional to 5,649.72, 8,474.58 and 2,728.32

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Solution

The fourth proportional to 5,649.72, 8,474.58 and 2,728.32 is: 4,092.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,649.72 : 8,474.58 = 2,728.32 : x
  2. Step 2: Convert to fraction form
    5,649.72/8,474.58 = 2,728.32/x
  3. Step 3: Cross multiply
    5,649.72x = 8,474.58 × 2,728.32
  4. Step 4: Simplify right side
    5,649.72x = 23,121,366.11
  5. Step 5: Solve for x
    x = 23,121,366.11/5,649.72
  6. Step 6: Final answer
    x = 4,092.48

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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.