Home / 3,939.84-5,906.40-1,747.36

Finding the Fourth Proportional to 3,939.84, 5,906.40 and 1,747.36

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Solution

The fourth proportional to 3,939.84, 5,906.40 and 1,747.36 is: 2,619.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.84 : 5,906.40 = 1,747.36 : x
  2. Step 2: Convert to fraction form
    3,939.84/5,906.40 = 1,747.36/x
  3. Step 3: Cross multiply
    3,939.84x = 5,906.40 × 1,747.36
  4. Step 4: Simplify right side
    3,939.84x = 10,320,607.10
  5. Step 5: Solve for x
    x = 10,320,607.10/3,939.84
  6. Step 6: Final answer
    x = 2,619.55

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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.