Home / 3,161.38-4,742.06-1,081.40

Finding the Fourth Proportional to 3,161.38, 4,742.06 and 1,081.40

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Solution

The fourth proportional to 3,161.38, 4,742.06 and 1,081.40 is: 1,622.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.38 : 4,742.06 = 1,081.40 : x
  2. Step 2: Convert to fraction form
    3,161.38/4,742.06 = 1,081.40/x
  3. Step 3: Cross multiply
    3,161.38x = 4,742.06 × 1,081.40
  4. Step 4: Simplify right side
    3,161.38x = 5,128,063.68
  5. Step 5: Solve for x
    x = 5,128,063.68/3,161.38
  6. Step 6: Final answer
    x = 1,622.10

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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.