Home / 1,251.78-1,872.19-1,022.14

Finding the Fourth Proportional to 1,251.78, 1,872.19 and 1,022.14

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Solution

The fourth proportional to 1,251.78, 1,872.19 and 1,022.14 is: 1,528.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,251.78 : 1,872.19 = 1,022.14 : x
  2. Step 2: Convert to fraction form
    1,251.78/1,872.19 = 1,022.14/x
  3. Step 3: Cross multiply
    1,251.78x = 1,872.19 × 1,022.14
  4. Step 4: Simplify right side
    1,251.78x = 1,913,640.29
  5. Step 5: Solve for x
    x = 1,913,640.29/1,251.78
  6. Step 6: Final answer
    x = 1,528.74

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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.