Home / 3,943.79-5,904.74-1,991.89

Finding the Fourth Proportional to 3,943.79, 5,904.74 and 1,991.89

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Solution

The fourth proportional to 3,943.79, 5,904.74 and 1,991.89 is: 2,982.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,943.79 : 5,904.74 = 1,991.89 : x
  2. Step 2: Convert to fraction form
    3,943.79/5,904.74 = 1,991.89/x
  3. Step 3: Cross multiply
    3,943.79x = 5,904.74 × 1,991.89
  4. Step 4: Simplify right side
    3,943.79x = 11,761,592.56
  5. Step 5: Solve for x
    x = 11,761,592.56/3,943.79
  6. Step 6: Final answer
    x = 2,982.31

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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.