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Finding the Fourth Proportional to 8,791.95, 13,178.70 and 3,241.76

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Solution

The fourth proportional to 8,791.95, 13,178.70 and 3,241.76 is: 4,859.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,791.95 : 13,178.70 = 3,241.76 : x
  2. Step 2: Convert to fraction form
    8,791.95/13,178.70 = 3,241.76/x
  3. Step 3: Cross multiply
    8,791.95x = 13,178.70 × 3,241.76
  4. Step 4: Simplify right side
    8,791.95x = 42,722,116.62
  5. Step 5: Solve for x
    x = 42,722,116.62/8,791.95
  6. Step 6: Final answer
    x = 4,859.23

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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.