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Finding the Fourth Proportional to 7,998.68, 12,000.36 and 4,105.80

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Solution

The fourth proportional to 7,998.68, 12,000.36 and 4,105.80 is: 6,159.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,998.68 : 12,000.36 = 4,105.80 : x
  2. Step 2: Convert to fraction form
    7,998.68/12,000.36 = 4,105.80/x
  3. Step 3: Cross multiply
    7,998.68x = 12,000.36 × 4,105.80
  4. Step 4: Simplify right side
    7,998.68x = 49,271,078.09
  5. Step 5: Solve for x
    x = 49,271,078.09/7,998.68
  6. Step 6: Final answer
    x = 6,159.90

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1.5x scale

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.