Home / 3,149.20-4,716.60-1,982.80

Finding the Fourth Proportional to 3,149.20, 4,716.60 and 1,982.80

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Solution

The fourth proportional to 3,149.20, 4,716.60 and 1,982.80 is: 2,969.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,149.20 : 4,716.60 = 1,982.80 : x
  2. Step 2: Convert to fraction form
    3,149.20/4,716.60 = 1,982.80/x
  3. Step 3: Cross multiply
    3,149.20x = 4,716.60 × 1,982.80
  4. Step 4: Simplify right side
    3,149.20x = 9,352,074.48
  5. Step 5: Solve for x
    x = 9,352,074.48/3,149.20
  6. Step 6: Final answer
    x = 2,969.67

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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.