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Finding the Fourth Proportional to 8,689.41, 11,994.26 and 5,508

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Solution

The fourth proportional to 8,689.41, 11,994.26 and 5,508 is: 7,602.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,689.41 : 11,994.26 = 5,508 : x
  2. Step 2: Convert to fraction form
    8,689.41/11,994.26 = 5,508/x
  3. Step 3: Cross multiply
    8,689.41x = 11,994.26 × 5,508
  4. Step 4: Simplify right side
    8,689.41x = 66,064,356.54
  5. Step 5: Solve for x
    x = 66,064,356.54/8,689.41
  6. Step 6: Final answer
    x = 7,602.86

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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.