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Finding the Fourth Proportional to 8,408.09, 11,603.18 and 4,682.09

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Solution

The fourth proportional to 8,408.09, 11,603.18 and 4,682.09 is: 6,461.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,408.09 : 11,603.18 = 4,682.09 : x
  2. Step 2: Convert to fraction form
    8,408.09/11,603.18 = 4,682.09/x
  3. Step 3: Cross multiply
    8,408.09x = 11,603.18 × 4,682.09
  4. Step 4: Simplify right side
    8,408.09x = 54,327,133.05
  5. Step 5: Solve for x
    x = 54,327,133.05/8,408.09
  6. Step 6: Final answer
    x = 6,461.29

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Half scale
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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.