Home / 1,414.45-2,121.68-581.51

Finding the Fourth Proportional to 1,414.45, 2,121.68 and 581.51

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Solution

The fourth proportional to 1,414.45, 2,121.68 and 581.51 is: 872.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,414.45 : 2,121.68 = 581.51 : x
  2. Step 2: Convert to fraction form
    1,414.45/2,121.68 = 581.51/x
  3. Step 3: Cross multiply
    1,414.45x = 2,121.68 × 581.51
  4. Step 4: Simplify right side
    1,414.45x = 1,233,778.14
  5. Step 5: Solve for x
    x = 1,233,778.14/1,414.45
  6. Step 6: Final answer
    x = 872.27

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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.