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Finding the Fourth Proportional to 2,768.91, 3,821.02 and 1,509.96

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Solution

The fourth proportional to 2,768.91, 3,821.02 and 1,509.96 is: 2,083.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,768.91 : 3,821.02 = 1,509.96 : x
  2. Step 2: Convert to fraction form
    2,768.91/3,821.02 = 1,509.96/x
  3. Step 3: Cross multiply
    2,768.91x = 3,821.02 × 1,509.96
  4. Step 4: Simplify right side
    2,768.91x = 5,769,597.91
  5. Step 5: Solve for x
    x = 5,769,597.91/2,768.91
  6. Step 6: Final answer
    x = 2,083.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.