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Finding the Fourth Proportional to 8,275.82, 12,411.10 and 2,728.13

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Solution

The fourth proportional to 8,275.82, 12,411.10 and 2,728.13 is: 4,091.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,275.82 : 12,411.10 = 2,728.13 : x
  2. Step 2: Convert to fraction form
    8,275.82/12,411.10 = 2,728.13/x
  3. Step 3: Cross multiply
    8,275.82x = 12,411.10 × 2,728.13
  4. Step 4: Simplify right side
    8,275.82x = 33,859,080.60
  5. Step 5: Solve for x
    x = 33,859,080.60/8,275.82
  6. Step 6: Final answer
    x = 4,091.33

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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.