Home / 3,979.49-5,491.85-2,723.18

Finding the Fourth Proportional to 3,979.49, 5,491.85 and 2,723.18

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Solution

The fourth proportional to 3,979.49, 5,491.85 and 2,723.18 is: 3,758.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.49 : 5,491.85 = 2,723.18 : x
  2. Step 2: Convert to fraction form
    3,979.49/5,491.85 = 2,723.18/x
  3. Step 3: Cross multiply
    3,979.49x = 5,491.85 × 2,723.18
  4. Step 4: Simplify right side
    3,979.49x = 14,955,255.01
  5. Step 5: Solve for x
    x = 14,955,255.01/3,979.49
  6. Step 6: Final answer
    x = 3,758.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.