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Finding the Fourth Proportional to 8,551.85, 12,828.12 and 2,708.46

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Solution

The fourth proportional to 8,551.85, 12,828.12 and 2,708.46 is: 4,062.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,551.85 : 12,828.12 = 2,708.46 : x
  2. Step 2: Convert to fraction form
    8,551.85/12,828.12 = 2,708.46/x
  3. Step 3: Cross multiply
    8,551.85x = 12,828.12 × 2,708.46
  4. Step 4: Simplify right side
    8,551.85x = 34,744,491.05
  5. Step 5: Solve for x
    x = 34,744,491.05/8,551.85
  6. Step 6: Final answer
    x = 4,062.80

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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.