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Finding the Fourth Proportional to 4,788.82, 7,181.45 and 1,668.03

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Solution

The fourth proportional to 4,788.82, 7,181.45 and 1,668.03 is: 2,501.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,788.82 : 7,181.45 = 1,668.03 : x
  2. Step 2: Convert to fraction form
    4,788.82/7,181.45 = 1,668.03/x
  3. Step 3: Cross multiply
    4,788.82x = 7,181.45 × 1,668.03
  4. Step 4: Simplify right side
    4,788.82x = 11,978,829.80
  5. Step 5: Solve for x
    x = 11,978,829.80/4,788.82
  6. Step 6: Final answer
    x = 2,501.42

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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.