Home / 1,928.78-2,893.64-630.26

Finding the Fourth Proportional to 1,928.78, 2,893.64 and 630.26

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Solution

The fourth proportional to 1,928.78, 2,893.64 and 630.26 is: 945.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.78 : 2,893.64 = 630.26 : x
  2. Step 2: Convert to fraction form
    1,928.78/2,893.64 = 630.26/x
  3. Step 3: Cross multiply
    1,928.78x = 2,893.64 × 630.26
  4. Step 4: Simplify right side
    1,928.78x = 1,823,745.55
  5. Step 5: Solve for x
    x = 1,823,745.55/1,928.78
  6. Step 6: Final answer
    x = 945.54

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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.