Home / 2,919.20-4,028.49-1,724.18

Finding the Fourth Proportional to 2,919.20, 4,028.49 and 1,724.18

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Solution

The fourth proportional to 2,919.20, 4,028.49 and 1,724.18 is: 2,379.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.20 : 4,028.49 = 1,724.18 : x
  2. Step 2: Convert to fraction form
    2,919.20/4,028.49 = 1,724.18/x
  3. Step 3: Cross multiply
    2,919.20x = 4,028.49 × 1,724.18
  4. Step 4: Simplify right side
    2,919.20x = 6,945,821.75
  5. Step 5: Solve for x
    x = 6,945,821.75/2,919.20
  6. Step 6: Final answer
    x = 2,379.36

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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.