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Finding the Fourth Proportional to 8,272.64, 12,410.79 and 2,725.76

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Solution

The fourth proportional to 8,272.64, 12,410.79 and 2,725.76 is: 4,089.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,272.64 : 12,410.79 = 2,725.76 : x
  2. Step 2: Convert to fraction form
    8,272.64/12,410.79 = 2,725.76/x
  3. Step 3: Cross multiply
    8,272.64x = 12,410.79 × 2,725.76
  4. Step 4: Simplify right side
    8,272.64x = 33,828,834.95
  5. Step 5: Solve for x
    x = 33,828,834.95/8,272.64
  6. Step 6: Final answer
    x = 4,089.24

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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.