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Finding the Fourth Proportional to 3,463.88, 4,780.09 and 1,891.99

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Solution

The fourth proportional to 3,463.88, 4,780.09 and 1,891.99 is: 2,610.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,463.88 : 4,780.09 = 1,891.99 : x
  2. Step 2: Convert to fraction form
    3,463.88/4,780.09 = 1,891.99/x
  3. Step 3: Cross multiply
    3,463.88x = 4,780.09 × 1,891.99
  4. Step 4: Simplify right side
    3,463.88x = 9,043,865.80
  5. Step 5: Solve for x
    x = 9,043,865.80/3,463.88
  6. Step 6: Final answer
    x = 2,610.90

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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.