Home / 2,766.26-3,812.19-1,978.94

Finding the Fourth Proportional to 2,766.26, 3,812.19 and 1,978.94

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Solution

The fourth proportional to 2,766.26, 3,812.19 and 1,978.94 is: 2,727.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,766.26 : 3,812.19 = 1,978.94 : x
  2. Step 2: Convert to fraction form
    2,766.26/3,812.19 = 1,978.94/x
  3. Step 3: Cross multiply
    2,766.26x = 3,812.19 × 1,978.94
  4. Step 4: Simplify right side
    2,766.26x = 7,544,095.28
  5. Step 5: Solve for x
    x = 7,544,095.28/2,766.26
  6. Step 6: Final answer
    x = 2,727.18

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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.