Home / 3,313.20-4,968.45-1,120.80

Finding the Fourth Proportional to 3,313.20, 4,968.45 and 1,120.80

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Solution

The fourth proportional to 3,313.20, 4,968.45 and 1,120.80 is: 1,680.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,313.20 : 4,968.45 = 1,120.80 : x
  2. Step 2: Convert to fraction form
    3,313.20/4,968.45 = 1,120.80/x
  3. Step 3: Cross multiply
    3,313.20x = 4,968.45 × 1,120.80
  4. Step 4: Simplify right side
    3,313.20x = 5,568,638.76
  5. Step 5: Solve for x
    x = 5,568,638.76/3,313.20
  6. Step 6: Final answer
    x = 1,680.74

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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.