Home / 1,264.27-1,896.41-386.90

Finding the Fourth Proportional to 1,264.27, 1,896.41 and 386.90

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Solution

The fourth proportional to 1,264.27, 1,896.41 and 386.90 is: 580.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,264.27 : 1,896.41 = 386.90 : x
  2. Step 2: Convert to fraction form
    1,264.27/1,896.41 = 386.90/x
  3. Step 3: Cross multiply
    1,264.27x = 1,896.41 × 386.90
  4. Step 4: Simplify right side
    1,264.27x = 733,724.96
  5. Step 5: Solve for x
    x = 733,724.96/1,264.27
  6. Step 6: Final answer
    x = 580.36

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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.