Home / 1,905.12-2,629.26-1,119.06

Finding the Fourth Proportional to 1,905.12, 2,629.26 and 1,119.06

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Solution

The fourth proportional to 1,905.12, 2,629.26 and 1,119.06 is: 1,544.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.12 : 2,629.26 = 1,119.06 : x
  2. Step 2: Convert to fraction form
    1,905.12/2,629.26 = 1,119.06/x
  3. Step 3: Cross multiply
    1,905.12x = 2,629.26 × 1,119.06
  4. Step 4: Simplify right side
    1,905.12x = 2,942,299.70
  5. Step 5: Solve for x
    x = 2,942,299.70/1,905.12
  6. Step 6: Final answer
    x = 1,544.42

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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.