Home / 3,409.31-5,115.18-1,949.69

Finding the Fourth Proportional to 3,409.31, 5,115.18 and 1,949.69

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Solution

The fourth proportional to 3,409.31, 5,115.18 and 1,949.69 is: 2,925.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,409.31 : 5,115.18 = 1,949.69 : x
  2. Step 2: Convert to fraction form
    3,409.31/5,115.18 = 1,949.69/x
  3. Step 3: Cross multiply
    3,409.31x = 5,115.18 × 1,949.69
  4. Step 4: Simplify right side
    3,409.31x = 9,973,015.29
  5. Step 5: Solve for x
    x = 9,973,015.29/3,409.31
  6. Step 6: Final answer
    x = 2,925.23

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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.