Home / 2,956.12-4,078.14-1,961.56

Finding the Fourth Proportional to 2,956.12, 4,078.14 and 1,961.56

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Solution

The fourth proportional to 2,956.12, 4,078.14 and 1,961.56 is: 2,706.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,956.12 : 4,078.14 = 1,961.56 : x
  2. Step 2: Convert to fraction form
    2,956.12/4,078.14 = 1,961.56/x
  3. Step 3: Cross multiply
    2,956.12x = 4,078.14 × 1,961.56
  4. Step 4: Simplify right side
    2,956.12x = 7,999,516.30
  5. Step 5: Solve for x
    x = 7,999,516.30/2,956.12
  6. Step 6: Final answer
    x = 2,706.09

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1.5x scale

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.