Home / 2,168.16-3,251.92-1,805.28

Finding the Fourth Proportional to 2,168.16, 3,251.92 and 1,805.28

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Solution

The fourth proportional to 2,168.16, 3,251.92 and 1,805.28 is: 2,707.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,168.16 : 3,251.92 = 1,805.28 : x
  2. Step 2: Convert to fraction form
    2,168.16/3,251.92 = 1,805.28/x
  3. Step 3: Cross multiply
    2,168.16x = 3,251.92 × 1,805.28
  4. Step 4: Simplify right side
    2,168.16x = 5,870,626.14
  5. Step 5: Solve for x
    x = 5,870,626.14/2,168.16
  6. Step 6: Final answer
    x = 2,707.65

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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.