Home / 2,858.67-3,945.03-2,020.85

Finding the Fourth Proportional to 2,858.67, 3,945.03 and 2,020.85

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Solution

The fourth proportional to 2,858.67, 3,945.03 and 2,020.85 is: 2,788.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.67 : 3,945.03 = 2,020.85 : x
  2. Step 2: Convert to fraction form
    2,858.67/3,945.03 = 2,020.85/x
  3. Step 3: Cross multiply
    2,858.67x = 3,945.03 × 2,020.85
  4. Step 4: Simplify right side
    2,858.67x = 7,972,301.37
  5. Step 5: Solve for x
    x = 7,972,301.37/2,858.67
  6. Step 6: Final answer
    x = 2,788.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.