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Finding the Fourth Proportional to 8,408.76, 12,615.11 and 2,565.37

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Solution

The fourth proportional to 8,408.76, 12,615.11 and 2,565.37 is: 3,848.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,408.76 : 12,615.11 = 2,565.37 : x
  2. Step 2: Convert to fraction form
    8,408.76/12,615.11 = 2,565.37/x
  3. Step 3: Cross multiply
    8,408.76x = 12,615.11 × 2,565.37
  4. Step 4: Simplify right side
    8,408.76x = 32,362,361.67
  5. Step 5: Solve for x
    x = 32,362,361.67/8,408.76
  6. Step 6: Final answer
    x = 3,848.65

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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.