Home / 3,161.29-4,742.68-1,081.32

Finding the Fourth Proportional to 3,161.29, 4,742.68 and 1,081.32

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Solution

The fourth proportional to 3,161.29, 4,742.68 and 1,081.32 is: 1,622.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.29 : 4,742.68 = 1,081.32 : x
  2. Step 2: Convert to fraction form
    3,161.29/4,742.68 = 1,081.32/x
  3. Step 3: Cross multiply
    3,161.29x = 4,742.68 × 1,081.32
  4. Step 4: Simplify right side
    3,161.29x = 5,128,331.02
  5. Step 5: Solve for x
    x = 5,128,331.02/3,161.29
  6. Step 6: Final answer
    x = 1,622.23

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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.