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Finding the Fourth Proportional to 5,179.67, 7,768.41 and 1,669.99

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Solution

The fourth proportional to 5,179.67, 7,768.41 and 1,669.99 is: 2,504.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,179.67 : 7,768.41 = 1,669.99 : x
  2. Step 2: Convert to fraction form
    5,179.67/7,768.41 = 1,669.99/x
  3. Step 3: Cross multiply
    5,179.67x = 7,768.41 × 1,669.99
  4. Step 4: Simplify right side
    5,179.67x = 12,973,167.02
  5. Step 5: Solve for x
    x = 12,973,167.02/5,179.67
  6. Step 6: Final answer
    x = 2,504.63

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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.