Home / 3,409.16-5,108.94-1,949

Finding the Fourth Proportional to 3,409.16, 5,108.94 and 1,949

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Solution

The fourth proportional to 3,409.16, 5,108.94 and 1,949 is: 2,920.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,409.16 : 5,108.94 = 1,949 : x
  2. Step 2: Convert to fraction form
    3,409.16/5,108.94 = 1,949/x
  3. Step 3: Cross multiply
    3,409.16x = 5,108.94 × 1,949
  4. Step 4: Simplify right side
    3,409.16x = 9,957,324.06
  5. Step 5: Solve for x
    x = 9,957,324.06/3,409.16
  6. Step 6: Final answer
    x = 2,920.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.