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Finding the Fourth Proportional to 8,348.64, 12,520.91 and 2,801.86

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Solution

The fourth proportional to 8,348.64, 12,520.91 and 2,801.86 is: 4,202.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,348.64 : 12,520.91 = 2,801.86 : x
  2. Step 2: Convert to fraction form
    8,348.64/12,520.91 = 2,801.86/x
  3. Step 3: Cross multiply
    8,348.64x = 12,520.91 × 2,801.86
  4. Step 4: Simplify right side
    8,348.64x = 35,081,836.89
  5. Step 5: Solve for x
    x = 35,081,836.89/8,348.64
  6. Step 6: Final answer
    x = 4,202.10

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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.