Home / 2,959.54-4,439.21-1,991.79

Finding the Fourth Proportional to 2,959.54, 4,439.21 and 1,991.79

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Solution

The fourth proportional to 2,959.54, 4,439.21 and 1,991.79 is: 2,987.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,959.54 : 4,439.21 = 1,991.79 : x
  2. Step 2: Convert to fraction form
    2,959.54/4,439.21 = 1,991.79/x
  3. Step 3: Cross multiply
    2,959.54x = 4,439.21 × 1,991.79
  4. Step 4: Simplify right side
    2,959.54x = 8,841,964.13
  5. Step 5: Solve for x
    x = 8,841,964.13/2,959.54
  6. Step 6: Final answer
    x = 2,987.62

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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.