Home / 2,682.33-4,017.96-1,989.78

Finding the Fourth Proportional to 2,682.33, 4,017.96 and 1,989.78

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Solution

The fourth proportional to 2,682.33, 4,017.96 and 1,989.78 is: 2,980.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,682.33 : 4,017.96 = 1,989.78 : x
  2. Step 2: Convert to fraction form
    2,682.33/4,017.96 = 1,989.78/x
  3. Step 3: Cross multiply
    2,682.33x = 4,017.96 × 1,989.78
  4. Step 4: Simplify right side
    2,682.33x = 7,994,856.45
  5. Step 5: Solve for x
    x = 7,994,856.45/2,682.33
  6. Step 6: Final answer
    x = 2,980.56

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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.