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Finding the Fourth Proportional to 5,799.80, 8,699.60 and 4,039.88

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Solution

The fourth proportional to 5,799.80, 8,699.60 and 4,039.88 is: 6,059.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,799.80 : 8,699.60 = 4,039.88 : x
  2. Step 2: Convert to fraction form
    5,799.80/8,699.60 = 4,039.88/x
  3. Step 3: Cross multiply
    5,799.80x = 8,699.60 × 4,039.88
  4. Step 4: Simplify right side
    5,799.80x = 35,145,306.65
  5. Step 5: Solve for x
    x = 35,145,306.65/5,799.80
  6. Step 6: Final answer
    x = 6,059.74

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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.