Home / 1,944.40-2,918.68-1,078.48

Finding the Fourth Proportional to 1,944.40, 2,918.68 and 1,078.48

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Solution

The fourth proportional to 1,944.40, 2,918.68 and 1,078.48 is: 1,618.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,944.40 : 2,918.68 = 1,078.48 : x
  2. Step 2: Convert to fraction form
    1,944.40/2,918.68 = 1,078.48/x
  3. Step 3: Cross multiply
    1,944.40x = 2,918.68 × 1,078.48
  4. Step 4: Simplify right side
    1,944.40x = 3,147,738.01
  5. Step 5: Solve for x
    x = 3,147,738.01/1,944.40
  6. Step 6: Final answer
    x = 1,618.87

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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.