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Finding the Fourth Proportional to 8,805.78, 13,209.82 and 4,645.96

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Solution

The fourth proportional to 8,805.78, 13,209.82 and 4,645.96 is: 6,969.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,805.78 : 13,209.82 = 4,645.96 : x
  2. Step 2: Convert to fraction form
    8,805.78/13,209.82 = 4,645.96/x
  3. Step 3: Cross multiply
    8,805.78x = 13,209.82 × 4,645.96
  4. Step 4: Simplify right side
    8,805.78x = 61,372,295.33
  5. Step 5: Solve for x
    x = 61,372,295.33/8,805.78
  6. Step 6: Final answer
    x = 6,969.55

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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.