Home / 1,281.93-1,921.82-550.95

Finding the Fourth Proportional to 1,281.93, 1,921.82 and 550.95

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Solution

The fourth proportional to 1,281.93, 1,921.82 and 550.95 is: 825.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281.93 : 1,921.82 = 550.95 : x
  2. Step 2: Convert to fraction form
    1,281.93/1,921.82 = 550.95/x
  3. Step 3: Cross multiply
    1,281.93x = 1,921.82 × 550.95
  4. Step 4: Simplify right side
    1,281.93x = 1,058,823.97
  5. Step 5: Solve for x
    x = 1,058,823.97/1,281.93
  6. Step 6: Final answer
    x = 825.96

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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.