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Finding the Fourth Proportional to 8,289.71, 12,435.37 and 2,447.99

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Solution

The fourth proportional to 8,289.71, 12,435.37 and 2,447.99 is: 3,672.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,289.71 : 12,435.37 = 2,447.99 : x
  2. Step 2: Convert to fraction form
    8,289.71/12,435.37 = 2,447.99/x
  3. Step 3: Cross multiply
    8,289.71x = 12,435.37 × 2,447.99
  4. Step 4: Simplify right side
    8,289.71x = 30,441,593.11
  5. Step 5: Solve for x
    x = 30,441,593.11/8,289.71
  6. Step 6: Final answer
    x = 3,672.22

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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.