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Finding the Fourth Proportional to 4,890.87, 7,333.22 and 2,078.21

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Solution

The fourth proportional to 4,890.87, 7,333.22 and 2,078.21 is: 3,115.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,890.87 : 7,333.22 = 2,078.21 : x
  2. Step 2: Convert to fraction form
    4,890.87/7,333.22 = 2,078.21/x
  3. Step 3: Cross multiply
    4,890.87x = 7,333.22 × 2,078.21
  4. Step 4: Simplify right side
    4,890.87x = 15,239,924.08
  5. Step 5: Solve for x
    x = 15,239,924.08/4,890.87
  6. Step 6: Final answer
    x = 3,115.99

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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.