Home / 2,747.20-4,120.75-667.17

Finding the Fourth Proportional to 2,747.20, 4,120.75 and 667.17

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Solution

The fourth proportional to 2,747.20, 4,120.75 and 667.17 is: 1,000.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,747.20 : 4,120.75 = 667.17 : x
  2. Step 2: Convert to fraction form
    2,747.20/4,120.75 = 667.17/x
  3. Step 3: Cross multiply
    2,747.20x = 4,120.75 × 667.17
  4. Step 4: Simplify right side
    2,747.20x = 2,749,240.78
  5. Step 5: Solve for x
    x = 2,749,240.78/2,747.20
  6. Step 6: Final answer
    x = 1,000.74

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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.