Home / 3,161-4,743.38-1,213.32

Finding the Fourth Proportional to 3,161, 4,743.38 and 1,213.32

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Solution

The fourth proportional to 3,161, 4,743.38 and 1,213.32 is: 1,820.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161 : 4,743.38 = 1,213.32 : x
  2. Step 2: Convert to fraction form
    3,161/4,743.38 = 1,213.32/x
  3. Step 3: Cross multiply
    3,161x = 4,743.38 × 1,213.32
  4. Step 4: Simplify right side
    3,161x = 5,755,237.82
  5. Step 5: Solve for x
    x = 5,755,237.82/3,161
  6. Step 6: Final answer
    x = 1,820.70

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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.