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Finding the Fourth Proportional to 2,908.84, 4,013.76 and 1,789.96

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Solution

The fourth proportional to 2,908.84, 4,013.76 and 1,789.96 is: 2,469.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,908.84 : 4,013.76 = 1,789.96 : x
  2. Step 2: Convert to fraction form
    2,908.84/4,013.76 = 1,789.96/x
  3. Step 3: Cross multiply
    2,908.84x = 4,013.76 × 1,789.96
  4. Step 4: Simplify right side
    2,908.84x = 7,184,469.85
  5. Step 5: Solve for x
    x = 7,184,469.85/2,908.84
  6. Step 6: Final answer
    x = 2,469.87

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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.