Home / 1,919.17-2,879.07-945.37

Finding the Fourth Proportional to 1,919.17, 2,879.07 and 945.37

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Solution

The fourth proportional to 1,919.17, 2,879.07 and 945.37 is: 1,418.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.17 : 2,879.07 = 945.37 : x
  2. Step 2: Convert to fraction form
    1,919.17/2,879.07 = 945.37/x
  3. Step 3: Cross multiply
    1,919.17x = 2,879.07 × 945.37
  4. Step 4: Simplify right side
    1,919.17x = 2,721,786.41
  5. Step 5: Solve for x
    x = 2,721,786.41/1,919.17
  6. Step 6: Final answer
    x = 1,418.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.