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Finding the Fourth Proportional to 5,761.18, 7,949.92 and 3,208.74

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Solution

The fourth proportional to 5,761.18, 7,949.92 and 3,208.74 is: 4,427.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,761.18 : 7,949.92 = 3,208.74 : x
  2. Step 2: Convert to fraction form
    5,761.18/7,949.92 = 3,208.74/x
  3. Step 3: Cross multiply
    5,761.18x = 7,949.92 × 3,208.74
  4. Step 4: Simplify right side
    5,761.18x = 25,509,239.20
  5. Step 5: Solve for x
    x = 25,509,239.20/5,761.18
  6. Step 6: Final answer
    x = 4,427.78

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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.