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Finding the Fourth Proportional to 8,517.69, 12,779.57 and 3,253.10

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Solution

The fourth proportional to 8,517.69, 12,779.57 and 3,253.10 is: 4,880.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,517.69 : 12,779.57 = 3,253.10 : x
  2. Step 2: Convert to fraction form
    8,517.69/12,779.57 = 3,253.10/x
  3. Step 3: Cross multiply
    8,517.69x = 12,779.57 × 3,253.10
  4. Step 4: Simplify right side
    8,517.69x = 41,573,163.40
  5. Step 5: Solve for x
    x = 41,573,163.40/8,517.69
  6. Step 6: Final answer
    x = 4,880.80

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1.5x scale

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.