Home / 3,028.72-4,177.12-2,135.38

Finding the Fourth Proportional to 3,028.72, 4,177.12 and 2,135.38

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Solution

The fourth proportional to 3,028.72, 4,177.12 and 2,135.38 is: 2,945.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,028.72 : 4,177.12 = 2,135.38 : x
  2. Step 2: Convert to fraction form
    3,028.72/4,177.12 = 2,135.38/x
  3. Step 3: Cross multiply
    3,028.72x = 4,177.12 × 2,135.38
  4. Step 4: Simplify right side
    3,028.72x = 8,919,738.51
  5. Step 5: Solve for x
    x = 8,919,738.51/3,028.72
  6. Step 6: Final answer
    x = 2,945.05

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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.