Home / 3,912.73-5,869.45-1,280.24

Finding the Fourth Proportional to 3,912.73, 5,869.45 and 1,280.24

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Solution

The fourth proportional to 3,912.73, 5,869.45 and 1,280.24 is: 1,920.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.73 : 5,869.45 = 1,280.24 : x
  2. Step 2: Convert to fraction form
    3,912.73/5,869.45 = 1,280.24/x
  3. Step 3: Cross multiply
    3,912.73x = 5,869.45 × 1,280.24
  4. Step 4: Simplify right side
    3,912.73x = 7,514,304.67
  5. Step 5: Solve for x
    x = 7,514,304.67/3,912.73
  6. Step 6: Final answer
    x = 1,920.48

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1.5x scale

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.