Home / 3,279.59-4,921.43-1,331.79

Finding the Fourth Proportional to 3,279.59, 4,921.43 and 1,331.79

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Solution

The fourth proportional to 3,279.59, 4,921.43 and 1,331.79 is: 1,998.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,279.59 : 4,921.43 = 1,331.79 : x
  2. Step 2: Convert to fraction form
    3,279.59/4,921.43 = 1,331.79/x
  3. Step 3: Cross multiply
    3,279.59x = 4,921.43 × 1,331.79
  4. Step 4: Simplify right side
    3,279.59x = 6,554,314.59
  5. Step 5: Solve for x
    x = 6,554,314.59/3,279.59
  6. Step 6: Final answer
    x = 1,998.52

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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.