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Finding the Fourth Proportional to 8,454.40, 12,683.40 and 2,611.60

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Solution

The fourth proportional to 8,454.40, 12,683.40 and 2,611.60 is: 3,917.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,454.40 : 12,683.40 = 2,611.60 : x
  2. Step 2: Convert to fraction form
    8,454.40/12,683.40 = 2,611.60/x
  3. Step 3: Cross multiply
    8,454.40x = 12,683.40 × 2,611.60
  4. Step 4: Simplify right side
    8,454.40x = 33,123,967.44
  5. Step 5: Solve for x
    x = 33,123,967.44/8,454.40
  6. Step 6: Final answer
    x = 3,917.96

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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.