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Finding the Fourth Proportional to 2,754.72, 4,126.59 and 2,015.88

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Solution

The fourth proportional to 2,754.72, 4,126.59 and 2,015.88 is: 3,019.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,754.72 : 4,126.59 = 2,015.88 : x
  2. Step 2: Convert to fraction form
    2,754.72/4,126.59 = 2,015.88/x
  3. Step 3: Cross multiply
    2,754.72x = 4,126.59 × 2,015.88
  4. Step 4: Simplify right side
    2,754.72x = 8,318,710.25
  5. Step 5: Solve for x
    x = 8,318,710.25/2,754.72
  6. Step 6: Final answer
    x = 3,019.80

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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.