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Finding the Fourth Proportional to 8,207.80, 12,315.82 and 3,825.60

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Solution

The fourth proportional to 8,207.80, 12,315.82 and 3,825.60 is: 5,740.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,207.80 : 12,315.82 = 3,825.60 : x
  2. Step 2: Convert to fraction form
    8,207.80/12,315.82 = 3,825.60/x
  3. Step 3: Cross multiply
    8,207.80x = 12,315.82 × 3,825.60
  4. Step 4: Simplify right side
    8,207.80x = 47,115,400.99
  5. Step 5: Solve for x
    x = 47,115,400.99/8,207.80
  6. Step 6: Final answer
    x = 5,740.32

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.