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Finding the Fourth Proportional to 8,640.47, 12,968.00 and 3,449.99

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Solution

The fourth proportional to 8,640.47, 12,968.00 and 3,449.99 is: 5,177.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640.47 : 12,968.00 = 3,449.99 : x
  2. Step 2: Convert to fraction form
    8,640.47/12,968.00 = 3,449.99/x
  3. Step 3: Cross multiply
    8,640.47x = 12,968.00 × 3,449.99
  4. Step 4: Simplify right side
    8,640.47x = 44,739,498.43
  5. Step 5: Solve for x
    x = 44,739,498.43/8,640.47
  6. Step 6: Final answer
    x = 5,177.90

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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.