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Finding the Fourth Proportional to 2,899.87, 4,351.99 and 2,121.88

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Solution

The fourth proportional to 2,899.87, 4,351.99 and 2,121.88 is: 3,184.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,899.87 : 4,351.99 = 2,121.88 : x
  2. Step 2: Convert to fraction form
    2,899.87/4,351.99 = 2,121.88/x
  3. Step 3: Cross multiply
    2,899.87x = 4,351.99 × 2,121.88
  4. Step 4: Simplify right side
    2,899.87x = 9,234,400.47
  5. Step 5: Solve for x
    x = 9,234,400.47/2,899.87
  6. Step 6: Final answer
    x = 3,184.42

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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.