Home / 3,161.91-4,743.12-1,081.07

Finding the Fourth Proportional to 3,161.91, 4,743.12 and 1,081.07

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Solution

The fourth proportional to 3,161.91, 4,743.12 and 1,081.07 is: 1,621.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.91 : 4,743.12 = 1,081.07 : x
  2. Step 2: Convert to fraction form
    3,161.91/4,743.12 = 1,081.07/x
  3. Step 3: Cross multiply
    3,161.91x = 4,743.12 × 1,081.07
  4. Step 4: Simplify right side
    3,161.91x = 5,127,642.86
  5. Step 5: Solve for x
    x = 5,127,642.86/3,161.91
  6. Step 6: Final answer
    x = 1,621.69

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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.