Home / 1,906.12-2,640.37-1,867.24

Finding the Fourth Proportional to 1,906.12, 2,640.37 and 1,867.24

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Solution

The fourth proportional to 1,906.12, 2,640.37 and 1,867.24 is: 2,586.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,906.12 : 2,640.37 = 1,867.24 : x
  2. Step 2: Convert to fraction form
    1,906.12/2,640.37 = 1,867.24/x
  3. Step 3: Cross multiply
    1,906.12x = 2,640.37 × 1,867.24
  4. Step 4: Simplify right side
    1,906.12x = 4,930,204.48
  5. Step 5: Solve for x
    x = 4,930,204.48/1,906.12
  6. Step 6: Final answer
    x = 2,586.51

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.