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Finding the Fourth Proportional to 2,379.93, 3,571.17 and 994.20

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Solution

The fourth proportional to 2,379.93, 3,571.17 and 994.20 is: 1,491.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,379.93 : 3,571.17 = 994.20 : x
  2. Step 2: Convert to fraction form
    2,379.93/3,571.17 = 994.20/x
  3. Step 3: Cross multiply
    2,379.93x = 3,571.17 × 994.20
  4. Step 4: Simplify right side
    2,379.93x = 3,550,457.21
  5. Step 5: Solve for x
    x = 3,550,457.21/2,379.93
  6. Step 6: Final answer
    x = 1,491.83

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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.