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Finding the Fourth Proportional to 8,940.41, 13,402.64 and 3,389.99

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Solution

The fourth proportional to 8,940.41, 13,402.64 and 3,389.99 is: 5,081.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,940.41 : 13,402.64 = 3,389.99 : x
  2. Step 2: Convert to fraction form
    8,940.41/13,402.64 = 3,389.99/x
  3. Step 3: Cross multiply
    8,940.41x = 13,402.64 × 3,389.99
  4. Step 4: Simplify right side
    8,940.41x = 45,434,731.61
  5. Step 5: Solve for x
    x = 45,434,731.61/8,940.41
  6. Step 6: Final answer
    x = 5,081.95

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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.