Home / 2,028.80-2,799.70-1,189.52

Finding the Fourth Proportional to 2,028.80, 2,799.70 and 1,189.52

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Solution

The fourth proportional to 2,028.80, 2,799.70 and 1,189.52 is: 1,641.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,028.80 : 2,799.70 = 1,189.52 : x
  2. Step 2: Convert to fraction form
    2,028.80/2,799.70 = 1,189.52/x
  3. Step 3: Cross multiply
    2,028.80x = 2,799.70 × 1,189.52
  4. Step 4: Simplify right side
    2,028.80x = 3,330,299.14
  5. Step 5: Solve for x
    x = 3,330,299.14/2,028.80
  6. Step 6: Final answer
    x = 1,641.51

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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.