Home / 2,961.62-4,087.19-1,965.20

Finding the Fourth Proportional to 2,961.62, 4,087.19 and 1,965.20

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Solution

The fourth proportional to 2,961.62, 4,087.19 and 1,965.20 is: 2,712.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,961.62 : 4,087.19 = 1,965.20 : x
  2. Step 2: Convert to fraction form
    2,961.62/4,087.19 = 1,965.20/x
  3. Step 3: Cross multiply
    2,961.62x = 4,087.19 × 1,965.20
  4. Step 4: Simplify right side
    2,961.62x = 8,032,135.96
  5. Step 5: Solve for x
    x = 8,032,135.96/2,961.62
  6. Step 6: Final answer
    x = 2,712.08

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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.