Home / 2,751.62-4,121.55-1,272.05

Finding the Fourth Proportional to 2,751.62, 4,121.55 and 1,272.05

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Solution

The fourth proportional to 2,751.62, 4,121.55 and 1,272.05 is: 1,905.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,751.62 : 4,121.55 = 1,272.05 : x
  2. Step 2: Convert to fraction form
    2,751.62/4,121.55 = 1,272.05/x
  3. Step 3: Cross multiply
    2,751.62x = 4,121.55 × 1,272.05
  4. Step 4: Simplify right side
    2,751.62x = 5,242,817.68
  5. Step 5: Solve for x
    x = 5,242,817.68/2,751.62
  6. Step 6: Final answer
    x = 1,905.36

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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.