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Finding the Fourth Proportional to 2,855.88, 4,273.56 and 2,689.56

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Solution

The fourth proportional to 2,855.88, 4,273.56 and 2,689.56 is: 4,024.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.88 : 4,273.56 = 2,689.56 : x
  2. Step 2: Convert to fraction form
    2,855.88/4,273.56 = 2,689.56/x
  3. Step 3: Cross multiply
    2,855.88x = 4,273.56 × 2,689.56
  4. Step 4: Simplify right side
    2,855.88x = 11,493,996.03
  5. Step 5: Solve for x
    x = 11,493,996.03/2,855.88
  6. Step 6: Final answer
    x = 4,024.68

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1.5x scale

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.