Home / 2,861.20-3,948.44-1,619.20

Finding the Fourth Proportional to 2,861.20, 3,948.44 and 1,619.20

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Solution

The fourth proportional to 2,861.20, 3,948.44 and 1,619.20 is: 2,234.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.20 : 3,948.44 = 1,619.20 : x
  2. Step 2: Convert to fraction form
    2,861.20/3,948.44 = 1,619.20/x
  3. Step 3: Cross multiply
    2,861.20x = 3,948.44 × 1,619.20
  4. Step 4: Simplify right side
    2,861.20x = 6,393,314.05
  5. Step 5: Solve for x
    x = 6,393,314.05/2,861.20
  6. Step 6: Final answer
    x = 2,234.49

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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.