Home / 3,170.92-4,756.20-979.60

Finding the Fourth Proportional to 3,170.92, 4,756.20 and 979.60

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Solution

The fourth proportional to 3,170.92, 4,756.20 and 979.60 is: 1,469.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,170.92 : 4,756.20 = 979.60 : x
  2. Step 2: Convert to fraction form
    3,170.92/4,756.20 = 979.60/x
  3. Step 3: Cross multiply
    3,170.92x = 4,756.20 × 979.60
  4. Step 4: Simplify right side
    3,170.92x = 4,659,173.52
  5. Step 5: Solve for x
    x = 4,659,173.52/3,170.92
  6. Step 6: Final answer
    x = 1,469.34

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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.