Home / 7,179.11-9,907.29-3,949.07

Finding the Fourth Proportional to 7,179.11, 9,907.29 and 3,949.07

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Solution

The fourth proportional to 7,179.11, 9,907.29 and 3,949.07 is: 5,449.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,179.11 : 9,907.29 = 3,949.07 : x
  2. Step 2: Convert to fraction form
    7,179.11/9,907.29 = 3,949.07/x
  3. Step 3: Cross multiply
    7,179.11x = 9,907.29 × 3,949.07
  4. Step 4: Simplify right side
    7,179.11x = 39,124,606.49
  5. Step 5: Solve for x
    x = 39,124,606.49/7,179.11
  6. Step 6: Final answer
    x = 5,449.79

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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.