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Finding the Fourth Proportional to 2,699.27, 4,042 and 2,152.25

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Solution

The fourth proportional to 2,699.27, 4,042 and 2,152.25 is: 3,222.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,699.27 : 4,042 = 2,152.25 : x
  2. Step 2: Convert to fraction form
    2,699.27/4,042 = 2,152.25/x
  3. Step 3: Cross multiply
    2,699.27x = 4,042 × 2,152.25
  4. Step 4: Simplify right side
    2,699.27x = 8,699,394.50
  5. Step 5: Solve for x
    x = 8,699,394.50/2,699.27
  6. Step 6: Final answer
    x = 3,222.87

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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.