Home / 2,956.75-4,078.66-1,878.03

Finding the Fourth Proportional to 2,956.75, 4,078.66 and 1,878.03

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Solution

The fourth proportional to 2,956.75, 4,078.66 and 1,878.03 is: 2,590.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,956.75 : 4,078.66 = 1,878.03 : x
  2. Step 2: Convert to fraction form
    2,956.75/4,078.66 = 1,878.03/x
  3. Step 3: Cross multiply
    2,956.75x = 4,078.66 × 1,878.03
  4. Step 4: Simplify right side
    2,956.75x = 7,659,845.84
  5. Step 5: Solve for x
    x = 7,659,845.84/2,956.75
  6. Step 6: Final answer
    x = 2,590.63

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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.