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Finding the Fourth Proportional to 8,551.81, 12,828.93 and 2,708.88

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Solution

The fourth proportional to 8,551.81, 12,828.93 and 2,708.88 is: 4,063.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,551.81 : 12,828.93 = 2,708.88 : x
  2. Step 2: Convert to fraction form
    8,551.81/12,828.93 = 2,708.88/x
  3. Step 3: Cross multiply
    8,551.81x = 12,828.93 × 2,708.88
  4. Step 4: Simplify right side
    8,551.81x = 34,752,031.90
  5. Step 5: Solve for x
    x = 34,752,031.90/8,551.81
  6. Step 6: Final answer
    x = 4,063.70

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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.