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Finding the Fourth Proportional to 8,520.08, 12,782.02 and 3,326

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Solution

The fourth proportional to 8,520.08, 12,782.02 and 3,326 is: 4,989.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,520.08 : 12,782.02 = 3,326 : x
  2. Step 2: Convert to fraction form
    8,520.08/12,782.02 = 3,326/x
  3. Step 3: Cross multiply
    8,520.08x = 12,782.02 × 3,326
  4. Step 4: Simplify right side
    8,520.08x = 42,512,998.52
  5. Step 5: Solve for x
    x = 42,512,998.52/8,520.08
  6. Step 6: Final answer
    x = 4,989.74

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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.