Home / 3,127.88-4,315.50-2,080.12

Finding the Fourth Proportional to 3,127.88, 4,315.50 and 2,080.12

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Solution

The fourth proportional to 3,127.88, 4,315.50 and 2,080.12 is: 2,869.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.88 : 4,315.50 = 2,080.12 : x
  2. Step 2: Convert to fraction form
    3,127.88/4,315.50 = 2,080.12/x
  3. Step 3: Cross multiply
    3,127.88x = 4,315.50 × 2,080.12
  4. Step 4: Simplify right side
    3,127.88x = 8,976,757.86
  5. Step 5: Solve for x
    x = 8,976,757.86/3,127.88
  6. Step 6: Final answer
    x = 2,869.92

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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.