Home / 2,919.20-4,025.70-1,923.48

Finding the Fourth Proportional to 2,919.20, 4,025.70 and 1,923.48

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Solution

The fourth proportional to 2,919.20, 4,025.70 and 1,923.48 is: 2,652.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.20 : 4,025.70 = 1,923.48 : x
  2. Step 2: Convert to fraction form
    2,919.20/4,025.70 = 1,923.48/x
  3. Step 3: Cross multiply
    2,919.20x = 4,025.70 × 1,923.48
  4. Step 4: Simplify right side
    2,919.20x = 7,743,353.44
  5. Step 5: Solve for x
    x = 7,743,353.44/2,919.20
  6. Step 6: Final answer
    x = 2,652.56

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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.