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Finding the Fourth Proportional to 8,408.78, 11,604.21 and 5,266.82

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Solution

The fourth proportional to 8,408.78, 11,604.21 and 5,266.82 is: 7,268.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,408.78 : 11,604.21 = 5,266.82 : x
  2. Step 2: Convert to fraction form
    8,408.78/11,604.21 = 5,266.82/x
  3. Step 3: Cross multiply
    8,408.78x = 11,604.21 × 5,266.82
  4. Step 4: Simplify right side
    8,408.78x = 61,117,285.31
  5. Step 5: Solve for x
    x = 61,117,285.31/8,408.78
  6. Step 6: Final answer
    x = 7,268.27

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1.5x scale

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.