Home / 5,261.09-7,880.69-2,489.97

Finding the Fourth Proportional to 5,261.09, 7,880.69 and 2,489.97

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Solution

The fourth proportional to 5,261.09, 7,880.69 and 2,489.97 is: 3,729.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,261.09 : 7,880.69 = 2,489.97 : x
  2. Step 2: Convert to fraction form
    5,261.09/7,880.69 = 2,489.97/x
  3. Step 3: Cross multiply
    5,261.09x = 7,880.69 × 2,489.97
  4. Step 4: Simplify right side
    5,261.09x = 19,622,669.23
  5. Step 5: Solve for x
    x = 19,622,669.23/5,261.09
  6. Step 6: Final answer
    x = 3,729.78

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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.