Home / 3,168.32-4,371.20-1,908.90

Finding the Fourth Proportional to 3,168.32, 4,371.20 and 1,908.90

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Solution

The fourth proportional to 3,168.32, 4,371.20 and 1,908.90 is: 2,633.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,168.32 : 4,371.20 = 1,908.90 : x
  2. Step 2: Convert to fraction form
    3,168.32/4,371.20 = 1,908.90/x
  3. Step 3: Cross multiply
    3,168.32x = 4,371.20 × 1,908.90
  4. Step 4: Simplify right side
    3,168.32x = 8,344,163.21
  5. Step 5: Solve for x
    x = 8,344,163.21/3,168.32
  6. Step 6: Final answer
    x = 2,633.63

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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.