Home / 1,949.25-2,918.89-1,289.11

Finding the Fourth Proportional to 1,949.25, 2,918.89 and 1,289.11

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Solution

The fourth proportional to 1,949.25, 2,918.89 and 1,289.11 is: 1,930.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,949.25 : 2,918.89 = 1,289.11 : x
  2. Step 2: Convert to fraction form
    1,949.25/2,918.89 = 1,289.11/x
  3. Step 3: Cross multiply
    1,949.25x = 2,918.89 × 1,289.11
  4. Step 4: Simplify right side
    1,949.25x = 3,762,760.05
  5. Step 5: Solve for x
    x = 3,762,760.05/1,949.25
  6. Step 6: Final answer
    x = 1,930.36

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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.