Home / 3,161.81-4,743.22-1,187.59

Finding the Fourth Proportional to 3,161.81, 4,743.22 and 1,187.59

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Solution

The fourth proportional to 3,161.81, 4,743.22 and 1,187.59 is: 1,781.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.81 : 4,743.22 = 1,187.59 : x
  2. Step 2: Convert to fraction form
    3,161.81/4,743.22 = 1,187.59/x
  3. Step 3: Cross multiply
    3,161.81x = 4,743.22 × 1,187.59
  4. Step 4: Simplify right side
    3,161.81x = 5,632,985.81
  5. Step 5: Solve for x
    x = 5,632,985.81/3,161.81
  6. Step 6: Final answer
    x = 1,781.57

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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.