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Finding the Fourth Proportional to 4,813.02, 7,221.15 and 2,214

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Solution

The fourth proportional to 4,813.02, 7,221.15 and 2,214 is: 3,321.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,813.02 : 7,221.15 = 2,214 : x
  2. Step 2: Convert to fraction form
    4,813.02/7,221.15 = 2,214/x
  3. Step 3: Cross multiply
    4,813.02x = 7,221.15 × 2,214
  4. Step 4: Simplify right side
    4,813.02x = 15,987,626.10
  5. Step 5: Solve for x
    x = 15,987,626.10/4,813.02
  6. Step 6: Final answer
    x = 3,321.75

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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.