Home / 8,539.20-12,799.62-3,861.72

Finding the Fourth Proportional to 8,539.20, 12,799.62 and 3,861.72

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Solution

The fourth proportional to 8,539.20, 12,799.62 and 3,861.72 is: 5,788.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,539.20 : 12,799.62 = 3,861.72 : x
  2. Step 2: Convert to fraction form
    8,539.20/12,799.62 = 3,861.72/x
  3. Step 3: Cross multiply
    8,539.20x = 12,799.62 × 3,861.72
  4. Step 4: Simplify right side
    8,539.20x = 49,428,548.55
  5. Step 5: Solve for x
    x = 49,428,548.55/8,539.20
  6. Step 6: Final answer
    x = 5,788.43

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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.