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Finding the Fourth Proportional to 2,735.68, 4,100.80 and 1,276

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Solution

The fourth proportional to 2,735.68, 4,100.80 and 1,276 is: 1,912.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,735.68 : 4,100.80 = 1,276 : x
  2. Step 2: Convert to fraction form
    2,735.68/4,100.80 = 1,276/x
  3. Step 3: Cross multiply
    2,735.68x = 4,100.80 × 1,276
  4. Step 4: Simplify right side
    2,735.68x = 5,232,620.80
  5. Step 5: Solve for x
    x = 5,232,620.80/2,735.68
  6. Step 6: Final answer
    x = 1,912.73

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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.