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Finding the Fourth Proportional to 8,361.96, 12,539.16 and 2,518.90

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Solution

The fourth proportional to 8,361.96, 12,539.16 and 2,518.90 is: 3,777.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,361.96 : 12,539.16 = 2,518.90 : x
  2. Step 2: Convert to fraction form
    8,361.96/12,539.16 = 2,518.90/x
  3. Step 3: Cross multiply
    8,361.96x = 12,539.16 × 2,518.90
  4. Step 4: Simplify right side
    8,361.96x = 31,584,890.12
  5. Step 5: Solve for x
    x = 31,584,890.12/8,361.96
  6. Step 6: Final answer
    x = 3,777.21

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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.