Home / 2,857.93-4,279.55-1,979.18

Finding the Fourth Proportional to 2,857.93, 4,279.55 and 1,979.18

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Solution

The fourth proportional to 2,857.93, 4,279.55 and 1,979.18 is: 2,963.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,857.93 : 4,279.55 = 1,979.18 : x
  2. Step 2: Convert to fraction form
    2,857.93/4,279.55 = 1,979.18/x
  3. Step 3: Cross multiply
    2,857.93x = 4,279.55 × 1,979.18
  4. Step 4: Simplify right side
    2,857.93x = 8,469,968.48
  5. Step 5: Solve for x
    x = 8,469,968.48/2,857.93
  6. Step 6: Final answer
    x = 2,963.68

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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.