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Finding the Fourth Proportional to 3,877.32, 5,815.98 and 2,728.20

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Solution

The fourth proportional to 3,877.32, 5,815.98 and 2,728.20 is: 4,092.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,877.32 : 5,815.98 = 2,728.20 : x
  2. Step 2: Convert to fraction form
    3,877.32/5,815.98 = 2,728.20/x
  3. Step 3: Cross multiply
    3,877.32x = 5,815.98 × 2,728.20
  4. Step 4: Simplify right side
    3,877.32x = 15,867,156.64
  5. Step 5: Solve for x
    x = 15,867,156.64/3,877.32
  6. Step 6: Final answer
    x = 4,092.30

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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.