Home / 2,255.34-3,380.97-867.79

Finding the Fourth Proportional to 2,255.34, 3,380.97 and 867.79

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Solution

The fourth proportional to 2,255.34, 3,380.97 and 867.79 is: 1,300.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,255.34 : 3,380.97 = 867.79 : x
  2. Step 2: Convert to fraction form
    2,255.34/3,380.97 = 867.79/x
  3. Step 3: Cross multiply
    2,255.34x = 3,380.97 × 867.79
  4. Step 4: Simplify right side
    2,255.34x = 2,933,984.00
  5. Step 5: Solve for x
    x = 2,933,984.00/2,255.34
  6. Step 6: Final answer
    x = 1,300.90

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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.