Home / 1,292.73-1,939.27-415.25

Finding the Fourth Proportional to 1,292.73, 1,939.27 and 415.25

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Solution

The fourth proportional to 1,292.73, 1,939.27 and 415.25 is: 622.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292.73 : 1,939.27 = 415.25 : x
  2. Step 2: Convert to fraction form
    1,292.73/1,939.27 = 415.25/x
  3. Step 3: Cross multiply
    1,292.73x = 1,939.27 × 415.25
  4. Step 4: Simplify right side
    1,292.73x = 805,290.09
  5. Step 5: Solve for x
    x = 805,290.09/1,292.73
  6. Step 6: Final answer
    x = 622.94

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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.