Home / 3,979.30-5,491.44-2,210.86

Finding the Fourth Proportional to 3,979.30, 5,491.44 and 2,210.86

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Solution

The fourth proportional to 3,979.30, 5,491.44 and 2,210.86 is: 3,050.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.30 : 5,491.44 = 2,210.86 : x
  2. Step 2: Convert to fraction form
    3,979.30/5,491.44 = 2,210.86/x
  3. Step 3: Cross multiply
    3,979.30x = 5,491.44 × 2,210.86
  4. Step 4: Simplify right side
    3,979.30x = 12,140,805.04
  5. Step 5: Solve for x
    x = 12,140,805.04/3,979.30
  6. Step 6: Final answer
    x = 3,050.99

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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.