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Finding the Fourth Proportional to 2,163.99, 3,246.27 and 993.72

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Solution

The fourth proportional to 2,163.99, 3,246.27 and 993.72 is: 1,490.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163.99 : 3,246.27 = 993.72 : x
  2. Step 2: Convert to fraction form
    2,163.99/3,246.27 = 993.72/x
  3. Step 3: Cross multiply
    2,163.99x = 3,246.27 × 993.72
  4. Step 4: Simplify right side
    2,163.99x = 3,225,883.42
  5. Step 5: Solve for x
    x = 3,225,883.42/2,163.99
  6. Step 6: Final answer
    x = 1,490.71

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Similar ratio
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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.