Home / 2,119.05-2,923.59-1,279.44

Finding the Fourth Proportional to 2,119.05, 2,923.59 and 1,279.44

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Solution

The fourth proportional to 2,119.05, 2,923.59 and 1,279.44 is: 1,765.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.05 : 2,923.59 = 1,279.44 : x
  2. Step 2: Convert to fraction form
    2,119.05/2,923.59 = 1,279.44/x
  3. Step 3: Cross multiply
    2,119.05x = 2,923.59 × 1,279.44
  4. Step 4: Simplify right side
    2,119.05x = 3,740,557.99
  5. Step 5: Solve for x
    x = 3,740,557.99/2,119.05
  6. Step 6: Final answer
    x = 1,765.21

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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.