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Finding the Fourth Proportional to 3,404.84, 4,698 and 1,912.82

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Solution

The fourth proportional to 3,404.84, 4,698 and 1,912.82 is: 2,639.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,404.84 : 4,698 = 1,912.82 : x
  2. Step 2: Convert to fraction form
    3,404.84/4,698 = 1,912.82/x
  3. Step 3: Cross multiply
    3,404.84x = 4,698 × 1,912.82
  4. Step 4: Simplify right side
    3,404.84x = 8,986,404.87
  5. Step 5: Solve for x
    x = 8,986,404.87/3,404.84
  6. Step 6: Final answer
    x = 2,639.31

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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.