Home / 3,890.62-5,376.09-2,769.61

Finding the Fourth Proportional to 3,890.62, 5,376.09 and 2,769.61

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Solution

The fourth proportional to 3,890.62, 5,376.09 and 2,769.61 is: 3,827.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.62 : 5,376.09 = 2,769.61 : x
  2. Step 2: Convert to fraction form
    3,890.62/5,376.09 = 2,769.61/x
  3. Step 3: Cross multiply
    3,890.62x = 5,376.09 × 2,769.61
  4. Step 4: Simplify right side
    3,890.62x = 14,889,668.50
  5. Step 5: Solve for x
    x = 14,889,668.50/3,890.62
  6. Step 6: Final answer
    x = 3,827.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.