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Finding the Fourth Proportional to 6,870, 10,305.81 and 2,253

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Solution

The fourth proportional to 6,870, 10,305.81 and 2,253 is: 3,379.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,870 : 10,305.81 = 2,253 : x
  2. Step 2: Convert to fraction form
    6,870/10,305.81 = 2,253/x
  3. Step 3: Cross multiply
    6,870x = 10,305.81 × 2,253
  4. Step 4: Simplify right side
    6,870x = 23,218,989.93
  5. Step 5: Solve for x
    x = 23,218,989.93/6,870
  6. Step 6: Final answer
    x = 3,379.77

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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.