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Finding the Fourth Proportional to 7,998.93, 11,998.40 and 2,156.13

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Solution

The fourth proportional to 7,998.93, 11,998.40 and 2,156.13 is: 3,234.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,998.93 : 11,998.40 = 2,156.13 : x
  2. Step 2: Convert to fraction form
    7,998.93/11,998.40 = 2,156.13/x
  3. Step 3: Cross multiply
    7,998.93x = 11,998.40 × 2,156.13
  4. Step 4: Simplify right side
    7,998.93x = 25,870,099.41
  5. Step 5: Solve for x
    x = 25,870,099.41/7,998.93
  6. Step 6: Final answer
    x = 3,234.20

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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.