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Finding the Fourth Proportional to 2,064.05, 3,093.80 and 813.71

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Solution

The fourth proportional to 2,064.05, 3,093.80 and 813.71 is: 1,219.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,064.05 : 3,093.80 = 813.71 : x
  2. Step 2: Convert to fraction form
    2,064.05/3,093.80 = 813.71/x
  3. Step 3: Cross multiply
    2,064.05x = 3,093.80 × 813.71
  4. Step 4: Simplify right side
    2,064.05x = 2,517,459.66
  5. Step 5: Solve for x
    x = 2,517,459.66/2,064.05
  6. Step 6: Final answer
    x = 1,219.67

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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.