Home / 3,108.21-4,289.27-1,691.84

Finding the Fourth Proportional to 3,108.21, 4,289.27 and 1,691.84

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Solution

The fourth proportional to 3,108.21, 4,289.27 and 1,691.84 is: 2,334.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.21 : 4,289.27 = 1,691.84 : x
  2. Step 2: Convert to fraction form
    3,108.21/4,289.27 = 1,691.84/x
  3. Step 3: Cross multiply
    3,108.21x = 4,289.27 × 1,691.84
  4. Step 4: Simplify right side
    3,108.21x = 7,256,758.56
  5. Step 5: Solve for x
    x = 7,256,758.56/3,108.21
  6. Step 6: Final answer
    x = 2,334.71

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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.