Home / 3,161.72-4,743.95-1,213.47

Finding the Fourth Proportional to 3,161.72, 4,743.95 and 1,213.47

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Solution

The fourth proportional to 3,161.72, 4,743.95 and 1,213.47 is: 1,820.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.72 : 4,743.95 = 1,213.47 : x
  2. Step 2: Convert to fraction form
    3,161.72/4,743.95 = 1,213.47/x
  3. Step 3: Cross multiply
    3,161.72x = 4,743.95 × 1,213.47
  4. Step 4: Simplify right side
    3,161.72x = 5,756,641.01
  5. Step 5: Solve for x
    x = 5,756,641.01/3,161.72
  6. Step 6: Final answer
    x = 1,820.73

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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.