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Finding the Fourth Proportional to 8,958.78, 13,427.01 and 4,788.49

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Solution

The fourth proportional to 8,958.78, 13,427.01 and 4,788.49 is: 7,176.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,958.78 : 13,427.01 = 4,788.49 : x
  2. Step 2: Convert to fraction form
    8,958.78/13,427.01 = 4,788.49/x
  3. Step 3: Cross multiply
    8,958.78x = 13,427.01 × 4,788.49
  4. Step 4: Simplify right side
    8,958.78x = 64,295,103.11
  5. Step 5: Solve for x
    x = 64,295,103.11/8,958.78
  6. Step 6: Final answer
    x = 7,176.77

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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.