Home / 3,947.56-5,447.49-2,179.13

Finding the Fourth Proportional to 3,947.56, 5,447.49 and 2,179.13

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Solution

The fourth proportional to 3,947.56, 5,447.49 and 2,179.13 is: 3,007.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.56 : 5,447.49 = 2,179.13 : x
  2. Step 2: Convert to fraction form
    3,947.56/5,447.49 = 2,179.13/x
  3. Step 3: Cross multiply
    3,947.56x = 5,447.49 × 2,179.13
  4. Step 4: Simplify right side
    3,947.56x = 11,870,777.99
  5. Step 5: Solve for x
    x = 11,870,777.99/3,947.56
  6. Step 6: Final answer
    x = 3,007.12

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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.