Home / 2,798.85-3,861.95-1,619.69

Finding the Fourth Proportional to 2,798.85, 3,861.95 and 1,619.69

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Solution

The fourth proportional to 2,798.85, 3,861.95 and 1,619.69 is: 2,234.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,798.85 : 3,861.95 = 1,619.69 : x
  2. Step 2: Convert to fraction form
    2,798.85/3,861.95 = 1,619.69/x
  3. Step 3: Cross multiply
    2,798.85x = 3,861.95 × 1,619.69
  4. Step 4: Simplify right side
    2,798.85x = 6,255,161.80
  5. Step 5: Solve for x
    x = 6,255,161.80/2,798.85
  6. Step 6: Final answer
    x = 2,234.91

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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.