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Finding the Fourth Proportional to 8,671.02, 13,002.20 and 2,826.90

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Solution

The fourth proportional to 8,671.02, 13,002.20 and 2,826.90 is: 4,238.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,671.02 : 13,002.20 = 2,826.90 : x
  2. Step 2: Convert to fraction form
    8,671.02/13,002.20 = 2,826.90/x
  3. Step 3: Cross multiply
    8,671.02x = 13,002.20 × 2,826.90
  4. Step 4: Simplify right side
    8,671.02x = 36,755,919.18
  5. Step 5: Solve for x
    x = 36,755,919.18/8,671.02
  6. Step 6: Final answer
    x = 4,238.94

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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.