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Finding the Fourth Proportional to 4,481.85, 6,723.98 and 3,991.62

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Solution

The fourth proportional to 4,481.85, 6,723.98 and 3,991.62 is: 5,988.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,481.85 : 6,723.98 = 3,991.62 : x
  2. Step 2: Convert to fraction form
    4,481.85/6,723.98 = 3,991.62/x
  3. Step 3: Cross multiply
    4,481.85x = 6,723.98 × 3,991.62
  4. Step 4: Simplify right side
    4,481.85x = 26,839,602.16
  5. Step 5: Solve for x
    x = 26,839,602.16/4,481.85
  6. Step 6: Final answer
    x = 5,988.50

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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.