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Finding the Fourth Proportional to 8,853.54, 13,276.94 and 2,928.64

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Solution

The fourth proportional to 8,853.54, 13,276.94 and 2,928.64 is: 4,391.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,853.54 : 13,276.94 = 2,928.64 : x
  2. Step 2: Convert to fraction form
    8,853.54/13,276.94 = 2,928.64/x
  3. Step 3: Cross multiply
    8,853.54x = 13,276.94 × 2,928.64
  4. Step 4: Simplify right side
    8,853.54x = 38,883,377.56
  5. Step 5: Solve for x
    x = 38,883,377.56/8,853.54
  6. Step 6: Final answer
    x = 4,391.85

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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.