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Finding the Fourth Proportional to 3,161.63, 4,741.13 and 1,081.22

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Solution

The fourth proportional to 3,161.63, 4,741.13 and 1,081.22 is: 1,621.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.63 : 4,741.13 = 1,081.22 : x
  2. Step 2: Convert to fraction form
    3,161.63/4,741.13 = 1,081.22/x
  3. Step 3: Cross multiply
    3,161.63x = 4,741.13 × 1,081.22
  4. Step 4: Simplify right side
    3,161.63x = 5,126,183.58
  5. Step 5: Solve for x
    x = 5,126,183.58/3,161.63
  6. Step 6: Final answer
    x = 1,621.37

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1.5x scale

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.