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Finding the Fourth Proportional to 8,328.45, 12,489.03 and 2,483.90

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Solution

The fourth proportional to 8,328.45, 12,489.03 and 2,483.90 is: 3,724.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,328.45 : 12,489.03 = 2,483.90 : x
  2. Step 2: Convert to fraction form
    8,328.45/12,489.03 = 2,483.90/x
  3. Step 3: Cross multiply
    8,328.45x = 12,489.03 × 2,483.90
  4. Step 4: Simplify right side
    8,328.45x = 31,021,439.17
  5. Step 5: Solve for x
    x = 31,021,439.17/8,328.45
  6. Step 6: Final answer
    x = 3,724.76

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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.