Home / 2,256.12-3,380.10-2,120.56

Finding the Fourth Proportional to 2,256.12, 3,380.10 and 2,120.56

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Solution

The fourth proportional to 2,256.12, 3,380.10 and 2,120.56 is: 3,177.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,256.12 : 3,380.10 = 2,120.56 : x
  2. Step 2: Convert to fraction form
    2,256.12/3,380.10 = 2,120.56/x
  3. Step 3: Cross multiply
    2,256.12x = 3,380.10 × 2,120.56
  4. Step 4: Simplify right side
    2,256.12x = 7,167,704.86
  5. Step 5: Solve for x
    x = 7,167,704.86/2,256.12
  6. Step 6: Final answer
    x = 3,177.01

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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.