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Finding the Fourth Proportional to 8,779, 13,168.50 and 2,623

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Solution

The fourth proportional to 8,779, 13,168.50 and 2,623 is: 3,934.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779 : 13,168.50 = 2,623 : x
  2. Step 2: Convert to fraction form
    8,779/13,168.50 = 2,623/x
  3. Step 3: Cross multiply
    8,779x = 13,168.50 × 2,623
  4. Step 4: Simplify right side
    8,779x = 34,540,975.50
  5. Step 5: Solve for x
    x = 34,540,975.50/8,779
  6. Step 6: Final answer
    x = 3,934.50

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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.