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Finding the Fourth Proportional to 8,791.22, 13,188.20 and 2,946.47

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Solution

The fourth proportional to 8,791.22, 13,188.20 and 2,946.47 is: 4,420.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,791.22 : 13,188.20 = 2,946.47 : x
  2. Step 2: Convert to fraction form
    8,791.22/13,188.20 = 2,946.47/x
  3. Step 3: Cross multiply
    8,791.22x = 13,188.20 × 2,946.47
  4. Step 4: Simplify right side
    8,791.22x = 38,858,554.98
  5. Step 5: Solve for x
    x = 38,858,554.98/8,791.22
  6. Step 6: Final answer
    x = 4,420.16

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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.