Home / 3,161.13-4,743.85-1,109.13

Finding the Fourth Proportional to 3,161.13, 4,743.85 and 1,109.13

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Solution

The fourth proportional to 3,161.13, 4,743.85 and 1,109.13 is: 1,664.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.13 : 4,743.85 = 1,109.13 : x
  2. Step 2: Convert to fraction form
    3,161.13/4,743.85 = 1,109.13/x
  3. Step 3: Cross multiply
    3,161.13x = 4,743.85 × 1,109.13
  4. Step 4: Simplify right side
    3,161.13x = 5,261,546.35
  5. Step 5: Solve for x
    x = 5,261,546.35/3,161.13
  6. Step 6: Final answer
    x = 1,664.45

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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.