Home / 3,979.06-5,491.02-2,210.56

Finding the Fourth Proportional to 3,979.06, 5,491.02 and 2,210.56

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Solution

The fourth proportional to 3,979.06, 5,491.02 and 2,210.56 is: 3,050.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.06 : 5,491.02 = 2,210.56 : x
  2. Step 2: Convert to fraction form
    3,979.06/5,491.02 = 2,210.56/x
  3. Step 3: Cross multiply
    3,979.06x = 5,491.02 × 2,210.56
  4. Step 4: Simplify right side
    3,979.06x = 12,138,229.17
  5. Step 5: Solve for x
    x = 12,138,229.17/3,979.06
  6. Step 6: Final answer
    x = 3,050.53

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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.