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Finding the Fourth Proportional to 3,999.84, 5,519.82 and 2,207.31

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Solution

The fourth proportional to 3,999.84, 5,519.82 and 2,207.31 is: 3,046.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.84 : 5,519.82 = 2,207.31 : x
  2. Step 2: Convert to fraction form
    3,999.84/5,519.82 = 2,207.31/x
  3. Step 3: Cross multiply
    3,999.84x = 5,519.82 × 2,207.31
  4. Step 4: Simplify right side
    3,999.84x = 12,183,953.88
  5. Step 5: Solve for x
    x = 12,183,953.88/3,999.84
  6. Step 6: Final answer
    x = 3,046.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.