Home / 3,080.52-4,255.20-2,686.86

Finding the Fourth Proportional to 3,080.52, 4,255.20 and 2,686.86

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Solution

The fourth proportional to 3,080.52, 4,255.20 and 2,686.86 is: 3,711.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,080.52 : 4,255.20 = 2,686.86 : x
  2. Step 2: Convert to fraction form
    3,080.52/4,255.20 = 2,686.86/x
  3. Step 3: Cross multiply
    3,080.52x = 4,255.20 × 2,686.86
  4. Step 4: Simplify right side
    3,080.52x = 11,433,126.67
  5. Step 5: Solve for x
    x = 11,433,126.67/3,080.52
  6. Step 6: Final answer
    x = 3,711.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.