Home / 2,956.42-4,081.35-1,961.20

Finding the Fourth Proportional to 2,956.42, 4,081.35 and 1,961.20

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Solution

The fourth proportional to 2,956.42, 4,081.35 and 1,961.20 is: 2,707.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,956.42 : 4,081.35 = 1,961.20 : x
  2. Step 2: Convert to fraction form
    2,956.42/4,081.35 = 1,961.20/x
  3. Step 3: Cross multiply
    2,956.42x = 4,081.35 × 1,961.20
  4. Step 4: Simplify right side
    2,956.42x = 8,004,343.62
  5. Step 5: Solve for x
    x = 8,004,343.62/2,956.42
  6. Step 6: Final answer
    x = 2,707.44

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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.