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Finding the Fourth Proportional to 4,788.21, 7,167.46 and 2,591.49

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Solution

The fourth proportional to 4,788.21, 7,167.46 and 2,591.49 is: 3,879.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,788.21 : 7,167.46 = 2,591.49 : x
  2. Step 2: Convert to fraction form
    4,788.21/7,167.46 = 2,591.49/x
  3. Step 3: Cross multiply
    4,788.21x = 7,167.46 × 2,591.49
  4. Step 4: Simplify right side
    4,788.21x = 18,574,400.92
  5. Step 5: Solve for x
    x = 18,574,400.92/4,788.21
  6. Step 6: Final answer
    x = 3,879.20

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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.