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Finding the Fourth Proportional to 2,798.99, 3,861.68 and 1,619.23

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Solution

The fourth proportional to 2,798.99, 3,861.68 and 1,619.23 is: 2,234.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,798.99 : 3,861.68 = 1,619.23 : x
  2. Step 2: Convert to fraction form
    2,798.99/3,861.68 = 1,619.23/x
  3. Step 3: Cross multiply
    2,798.99x = 3,861.68 × 1,619.23
  4. Step 4: Simplify right side
    2,798.99x = 6,252,942.50
  5. Step 5: Solve for x
    x = 6,252,942.50/2,798.99
  6. Step 6: Final answer
    x = 2,234.00

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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.