Home / 1,812.29-2,719.13-1,081.44

Finding the Fourth Proportional to 1,812.29, 2,719.13 and 1,081.44

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Solution

The fourth proportional to 1,812.29, 2,719.13 and 1,081.44 is: 1,622.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.29 : 2,719.13 = 1,081.44 : x
  2. Step 2: Convert to fraction form
    1,812.29/2,719.13 = 1,081.44/x
  3. Step 3: Cross multiply
    1,812.29x = 2,719.13 × 1,081.44
  4. Step 4: Simplify right side
    1,812.29x = 2,940,570.54
  5. Step 5: Solve for x
    x = 2,940,570.54/1,812.29
  6. Step 6: Final answer
    x = 1,622.58

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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.