Home / 2,192.86-3,280.62-1,219.60

Finding the Fourth Proportional to 2,192.86, 3,280.62 and 1,219.60

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Solution

The fourth proportional to 2,192.86, 3,280.62 and 1,219.60 is: 1,824.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,192.86 : 3,280.62 = 1,219.60 : x
  2. Step 2: Convert to fraction form
    2,192.86/3,280.62 = 1,219.60/x
  3. Step 3: Cross multiply
    2,192.86x = 3,280.62 × 1,219.60
  4. Step 4: Simplify right side
    2,192.86x = 4,001,044.15
  5. Step 5: Solve for x
    x = 4,001,044.15/2,192.86
  6. Step 6: Final answer
    x = 1,824.58

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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.