Home / 3,039.92-4,192.32-1,919.60

Finding the Fourth Proportional to 3,039.92, 4,192.32 and 1,919.60

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Solution

The fourth proportional to 3,039.92, 4,192.32 and 1,919.60 is: 2,647.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,039.92 : 4,192.32 = 1,919.60 : x
  2. Step 2: Convert to fraction form
    3,039.92/4,192.32 = 1,919.60/x
  3. Step 3: Cross multiply
    3,039.92x = 4,192.32 × 1,919.60
  4. Step 4: Simplify right side
    3,039.92x = 8,047,577.47
  5. Step 5: Solve for x
    x = 8,047,577.47/3,039.92
  6. Step 6: Final answer
    x = 2,647.30

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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.