Home / 1,971.78-2,954.36-1,385.73

Finding the Fourth Proportional to 1,971.78, 2,954.36 and 1,385.73

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Solution

The fourth proportional to 1,971.78, 2,954.36 and 1,385.73 is: 2,076.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.78 : 2,954.36 = 1,385.73 : x
  2. Step 2: Convert to fraction form
    1,971.78/2,954.36 = 1,385.73/x
  3. Step 3: Cross multiply
    1,971.78x = 2,954.36 × 1,385.73
  4. Step 4: Simplify right side
    1,971.78x = 4,093,955.98
  5. Step 5: Solve for x
    x = 4,093,955.98/1,971.78
  6. Step 6: Final answer
    x = 2,076.27

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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.