Home / 2,028.81-2,799.39-1,231.97

Finding the Fourth Proportional to 2,028.81, 2,799.39 and 1,231.97

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Solution

The fourth proportional to 2,028.81, 2,799.39 and 1,231.97 is: 1,699.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,028.81 : 2,799.39 = 1,231.97 : x
  2. Step 2: Convert to fraction form
    2,028.81/2,799.39 = 1,231.97/x
  3. Step 3: Cross multiply
    2,028.81x = 2,799.39 × 1,231.97
  4. Step 4: Simplify right side
    2,028.81x = 3,448,774.80
  5. Step 5: Solve for x
    x = 3,448,774.80/2,028.81
  6. Step 6: Final answer
    x = 1,699.90

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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.