Home / 3,105.16-4,660.38-1,643.56

Finding the Fourth Proportional to 3,105.16, 4,660.38 and 1,643.56

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Solution

The fourth proportional to 3,105.16, 4,660.38 and 1,643.56 is: 2,466.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.16 : 4,660.38 = 1,643.56 : x
  2. Step 2: Convert to fraction form
    3,105.16/4,660.38 = 1,643.56/x
  3. Step 3: Cross multiply
    3,105.16x = 4,660.38 × 1,643.56
  4. Step 4: Simplify right side
    3,105.16x = 7,659,614.15
  5. Step 5: Solve for x
    x = 7,659,614.15/3,105.16
  6. Step 6: Final answer
    x = 2,466.74

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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.