Home / 3,947.34-5,447.23-2,179.11

Finding the Fourth Proportional to 3,947.34, 5,447.23 and 2,179.11

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Solution

The fourth proportional to 3,947.34, 5,447.23 and 2,179.11 is: 3,007.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.34 : 5,447.23 = 2,179.11 : x
  2. Step 2: Convert to fraction form
    3,947.34/5,447.23 = 2,179.11/x
  3. Step 3: Cross multiply
    3,947.34x = 5,447.23 × 2,179.11
  4. Step 4: Simplify right side
    3,947.34x = 11,870,113.37
  5. Step 5: Solve for x
    x = 11,870,113.37/3,947.34
  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.