Home / 1,956.14-2,934.87-639.96

Finding the Fourth Proportional to 1,956.14, 2,934.87 and 639.96

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Solution

The fourth proportional to 1,956.14, 2,934.87 and 639.96 is: 960.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,956.14 : 2,934.87 = 639.96 : x
  2. Step 2: Convert to fraction form
    1,956.14/2,934.87 = 639.96/x
  3. Step 3: Cross multiply
    1,956.14x = 2,934.87 × 639.96
  4. Step 4: Simplify right side
    1,956.14x = 1,878,181.53
  5. Step 5: Solve for x
    x = 1,878,181.53/1,956.14
  6. Step 6: Final answer
    x = 960.15

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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.