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Finding the Fourth Proportional to 8,791.80, 13,188.06 and 2,952.60

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Solution

The fourth proportional to 8,791.80, 13,188.06 and 2,952.60 is: 4,429.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,791.80 : 13,188.06 = 2,952.60 : x
  2. Step 2: Convert to fraction form
    8,791.80/13,188.06 = 2,952.60/x
  3. Step 3: Cross multiply
    8,791.80x = 13,188.06 × 2,952.60
  4. Step 4: Simplify right side
    8,791.80x = 38,939,065.96
  5. Step 5: Solve for x
    x = 38,939,065.96/8,791.80
  6. Step 6: Final answer
    x = 4,429.02

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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.