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Finding the Fourth Proportional to 8,455.44, 12,683.16 and 2,611.92

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Solution

The fourth proportional to 8,455.44, 12,683.16 and 2,611.92 is: 3,917.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,455.44 : 12,683.16 = 2,611.92 : x
  2. Step 2: Convert to fraction form
    8,455.44/12,683.16 = 2,611.92/x
  3. Step 3: Cross multiply
    8,455.44x = 12,683.16 × 2,611.92
  4. Step 4: Simplify right side
    8,455.44x = 33,127,399.27
  5. Step 5: Solve for x
    x = 33,127,399.27/8,455.44
  6. Step 6: Final answer
    x = 3,917.88

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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.