Home / 3,828.54-5,278.75-2,978.04

Finding the Fourth Proportional to 3,828.54, 5,278.75 and 2,978.04

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Solution

The fourth proportional to 3,828.54, 5,278.75 and 2,978.04 is: 4,106.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,828.54 : 5,278.75 = 2,978.04 : x
  2. Step 2: Convert to fraction form
    3,828.54/5,278.75 = 2,978.04/x
  3. Step 3: Cross multiply
    3,828.54x = 5,278.75 × 2,978.04
  4. Step 4: Simplify right side
    3,828.54x = 15,720,328.65
  5. Step 5: Solve for x
    x = 15,720,328.65/3,828.54
  6. Step 6: Final answer
    x = 4,106.09

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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.