Home / 3,161.28-4,741.44-1,081.34

Finding the Fourth Proportional to 3,161.28, 4,741.44 and 1,081.34

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Solution

The fourth proportional to 3,161.28, 4,741.44 and 1,081.34 is: 1,621.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.28 : 4,741.44 = 1,081.34 : x
  2. Step 2: Convert to fraction form
    3,161.28/4,741.44 = 1,081.34/x
  3. Step 3: Cross multiply
    3,161.28x = 4,741.44 × 1,081.34
  4. Step 4: Simplify right side
    3,161.28x = 5,127,108.73
  5. Step 5: Solve for x
    x = 5,127,108.73/3,161.28
  6. Step 6: Final answer
    x = 1,621.85

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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.