Home / 3,833.88-5,290.73-2,155.29

Finding the Fourth Proportional to 3,833.88, 5,290.73 and 2,155.29

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Solution

The fourth proportional to 3,833.88, 5,290.73 and 2,155.29 is: 2,974.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,833.88 : 5,290.73 = 2,155.29 : x
  2. Step 2: Convert to fraction form
    3,833.88/5,290.73 = 2,155.29/x
  3. Step 3: Cross multiply
    3,833.88x = 5,290.73 × 2,155.29
  4. Step 4: Simplify right side
    3,833.88x = 11,403,020.23
  5. Step 5: Solve for x
    x = 11,403,020.23/3,833.88
  6. Step 6: Final answer
    x = 2,974.28

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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.