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Finding the Fourth Proportional to 8,671.62, 13,008.78 and 2,826.87

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Solution

The fourth proportional to 8,671.62, 13,008.78 and 2,826.87 is: 4,240.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,671.62 : 13,008.78 = 2,826.87 : x
  2. Step 2: Convert to fraction form
    8,671.62/13,008.78 = 2,826.87/x
  3. Step 3: Cross multiply
    8,671.62x = 13,008.78 × 2,826.87
  4. Step 4: Simplify right side
    8,671.62x = 36,774,129.92
  5. Step 5: Solve for x
    x = 36,774,129.92/8,671.62
  6. Step 6: Final answer
    x = 4,240.75

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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.