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Finding the Fourth Proportional to 2,750.62, 4,120.06 and 1,271.05

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Solution

The fourth proportional to 2,750.62, 4,120.06 and 1,271.05 is: 1,903.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,750.62 : 4,120.06 = 1,271.05 : x
  2. Step 2: Convert to fraction form
    2,750.62/4,120.06 = 1,271.05/x
  3. Step 3: Cross multiply
    2,750.62x = 4,120.06 × 1,271.05
  4. Step 4: Simplify right side
    2,750.62x = 5,236,775.31
  5. Step 5: Solve for x
    x = 5,236,775.31/2,750.62
  6. Step 6: Final answer
    x = 1,903.86

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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.