Home / 3,949.14-5,449.76-2,180.76

Finding the Fourth Proportional to 3,949.14, 5,449.76 and 2,180.76

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Solution

The fourth proportional to 3,949.14, 5,449.76 and 2,180.76 is: 3,009.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,949.14 : 5,449.76 = 2,180.76 : x
  2. Step 2: Convert to fraction form
    3,949.14/5,449.76 = 2,180.76/x
  3. Step 3: Cross multiply
    3,949.14x = 5,449.76 × 2,180.76
  4. Step 4: Simplify right side
    3,949.14x = 11,884,595.46
  5. Step 5: Solve for x
    x = 11,884,595.46/3,949.14
  6. Step 6: Final answer
    x = 3,009.41

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Double scale
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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.