Home / 3,120.12-4,668.84-2,760.48

Finding the Fourth Proportional to 3,120.12, 4,668.84 and 2,760.48

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Solution

The fourth proportional to 3,120.12, 4,668.84 and 2,760.48 is: 4,130.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.12 : 4,668.84 = 2,760.48 : x
  2. Step 2: Convert to fraction form
    3,120.12/4,668.84 = 2,760.48/x
  3. Step 3: Cross multiply
    3,120.12x = 4,668.84 × 2,760.48
  4. Step 4: Simplify right side
    3,120.12x = 12,888,239.44
  5. Step 5: Solve for x
    x = 12,888,239.44/3,120.12
  6. Step 6: Final answer
    x = 4,130.69

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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.