Home / 3,979.12-5,491.76-2,407.44

Finding the Fourth Proportional to 3,979.12, 5,491.76 and 2,407.44

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Solution

The fourth proportional to 3,979.12, 5,491.76 and 2,407.44 is: 3,322.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.12 : 5,491.76 = 2,407.44 : x
  2. Step 2: Convert to fraction form
    3,979.12/5,491.76 = 2,407.44/x
  3. Step 3: Cross multiply
    3,979.12x = 5,491.76 × 2,407.44
  4. Step 4: Simplify right side
    3,979.12x = 13,221,082.69
  5. Step 5: Solve for x
    x = 13,221,082.69/3,979.12
  6. Step 6: Final answer
    x = 3,322.61

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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.