Home / 2,828-3,905.63-2,518.78

Finding the Fourth Proportional to 2,828, 3,905.63 and 2,518.78

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Solution

The fourth proportional to 2,828, 3,905.63 and 2,518.78 is: 3,478.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,828 : 3,905.63 = 2,518.78 : x
  2. Step 2: Convert to fraction form
    2,828/3,905.63 = 2,518.78/x
  3. Step 3: Cross multiply
    2,828x = 3,905.63 × 2,518.78
  4. Step 4: Simplify right side
    2,828x = 9,837,422.73
  5. Step 5: Solve for x
    x = 9,837,422.73/2,828
  6. Step 6: Final answer
    x = 3,478.58

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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.