Home / 2,961.12-4,086.16-1,781.44

Finding the Fourth Proportional to 2,961.12, 4,086.16 and 1,781.44

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Solution

The fourth proportional to 2,961.12, 4,086.16 and 1,781.44 is: 2,458.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,961.12 : 4,086.16 = 1,781.44 : x
  2. Step 2: Convert to fraction form
    2,961.12/4,086.16 = 1,781.44/x
  3. Step 3: Cross multiply
    2,961.12x = 4,086.16 × 1,781.44
  4. Step 4: Simplify right side
    2,961.12x = 7,279,248.87
  5. Step 5: Solve for x
    x = 7,279,248.87/2,961.12
  6. Step 6: Final answer
    x = 2,458.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.