Home / 1,918.44-2,874.78-1,371.78

Finding the Fourth Proportional to 1,918.44, 2,874.78 and 1,371.78

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Solution

The fourth proportional to 1,918.44, 2,874.78 and 1,371.78 is: 2,055.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.44 : 2,874.78 = 1,371.78 : x
  2. Step 2: Convert to fraction form
    1,918.44/2,874.78 = 1,371.78/x
  3. Step 3: Cross multiply
    1,918.44x = 2,874.78 × 1,371.78
  4. Step 4: Simplify right side
    1,918.44x = 3,943,565.71
  5. Step 5: Solve for x
    x = 3,943,565.71/1,918.44
  6. Step 6: Final answer
    x = 2,055.61

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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.