Home / 3,091.33-4,638.48-1,921.02

Finding the Fourth Proportional to 3,091.33, 4,638.48 and 1,921.02

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Solution

The fourth proportional to 3,091.33, 4,638.48 and 1,921.02 is: 2,882.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,091.33 : 4,638.48 = 1,921.02 : x
  2. Step 2: Convert to fraction form
    3,091.33/4,638.48 = 1,921.02/x
  3. Step 3: Cross multiply
    3,091.33x = 4,638.48 × 1,921.02
  4. Step 4: Simplify right side
    3,091.33x = 8,910,612.85
  5. Step 5: Solve for x
    x = 8,910,612.85/3,091.33
  6. Step 6: Final answer
    x = 2,882.45

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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.