Home / 3,129.42-4,694.22-1,812.36

Finding the Fourth Proportional to 3,129.42, 4,694.22 and 1,812.36

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Solution

The fourth proportional to 3,129.42, 4,694.22 and 1,812.36 is: 2,718.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.42 : 4,694.22 = 1,812.36 : x
  2. Step 2: Convert to fraction form
    3,129.42/4,694.22 = 1,812.36/x
  3. Step 3: Cross multiply
    3,129.42x = 4,694.22 × 1,812.36
  4. Step 4: Simplify right side
    3,129.42x = 8,507,616.56
  5. Step 5: Solve for x
    x = 8,507,616.56/3,129.42
  6. Step 6: Final answer
    x = 2,718.59

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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.