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Finding the Fourth Proportional to 8,675.90, 11,969.52 and 5,693.39

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Solution

The fourth proportional to 8,675.90, 11,969.52 and 5,693.39 is: 7,854.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,675.90 : 11,969.52 = 5,693.39 : x
  2. Step 2: Convert to fraction form
    8,675.90/11,969.52 = 5,693.39/x
  3. Step 3: Cross multiply
    8,675.90x = 11,969.52 × 5,693.39
  4. Step 4: Simplify right side
    8,675.90x = 68,147,145.47
  5. Step 5: Solve for x
    x = 68,147,145.47/8,675.90
  6. Step 6: Final answer
    x = 7,854.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.