Home / 3,965.65-5,949.38-2,115.79

Finding the Fourth Proportional to 3,965.65, 5,949.38 and 2,115.79

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Solution

The fourth proportional to 3,965.65, 5,949.38 and 2,115.79 is: 3,174.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,965.65 : 5,949.38 = 2,115.79 : x
  2. Step 2: Convert to fraction form
    3,965.65/5,949.38 = 2,115.79/x
  3. Step 3: Cross multiply
    3,965.65x = 5,949.38 × 2,115.79
  4. Step 4: Simplify right side
    3,965.65x = 12,587,638.71
  5. Step 5: Solve for x
    x = 12,587,638.71/3,965.65
  6. Step 6: Final answer
    x = 3,174.17

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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.