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Finding the Fourth Proportional to 8,499.63, 12,730.98 and 4,107.88

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Solution

The fourth proportional to 8,499.63, 12,730.98 and 4,107.88 is: 6,152.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,499.63 : 12,730.98 = 4,107.88 : x
  2. Step 2: Convert to fraction form
    8,499.63/12,730.98 = 4,107.88/x
  3. Step 3: Cross multiply
    8,499.63x = 12,730.98 × 4,107.88
  4. Step 4: Simplify right side
    8,499.63x = 52,297,274.47
  5. Step 5: Solve for x
    x = 52,297,274.47/8,499.63
  6. Step 6: Final answer
    x = 6,152.89

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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.