Home / 2,742.78-4,116.60-1,962.75

Finding the Fourth Proportional to 2,742.78, 4,116.60 and 1,962.75

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Solution

The fourth proportional to 2,742.78, 4,116.60 and 1,962.75 is: 2,945.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,742.78 : 4,116.60 = 1,962.75 : x
  2. Step 2: Convert to fraction form
    2,742.78/4,116.60 = 1,962.75/x
  3. Step 3: Cross multiply
    2,742.78x = 4,116.60 × 1,962.75
  4. Step 4: Simplify right side
    2,742.78x = 8,079,856.65
  5. Step 5: Solve for x
    x = 8,079,856.65/2,742.78
  6. Step 6: Final answer
    x = 2,945.86

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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.