Home / 3,170.28-4,757.22-2,130.78

Finding the Fourth Proportional to 3,170.28, 4,757.22 and 2,130.78

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Solution

The fourth proportional to 3,170.28, 4,757.22 and 2,130.78 is: 3,197.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,170.28 : 4,757.22 = 2,130.78 : x
  2. Step 2: Convert to fraction form
    3,170.28/4,757.22 = 2,130.78/x
  3. Step 3: Cross multiply
    3,170.28x = 4,757.22 × 2,130.78
  4. Step 4: Simplify right side
    3,170.28x = 10,136,589.23
  5. Step 5: Solve for x
    x = 10,136,589.23/3,170.28
  6. Step 6: Final answer
    x = 3,197.38

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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.