Home / 3,940.45-5,910.60-1,018.69

Finding the Fourth Proportional to 3,940.45, 5,910.60 and 1,018.69

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Solution

The fourth proportional to 3,940.45, 5,910.60 and 1,018.69 is: 1,528.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.45 : 5,910.60 = 1,018.69 : x
  2. Step 2: Convert to fraction form
    3,940.45/5,910.60 = 1,018.69/x
  3. Step 3: Cross multiply
    3,940.45x = 5,910.60 × 1,018.69
  4. Step 4: Simplify right side
    3,940.45x = 6,021,069.11
  5. Step 5: Solve for x
    x = 6,021,069.11/3,940.45
  6. Step 6: Final answer
    x = 1,528.02

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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.