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Finding the Fourth Proportional to 2,104.23, 3,156.52 and 644.41

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Solution

The fourth proportional to 2,104.23, 3,156.52 and 644.41 is: 966.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,104.23 : 3,156.52 = 644.41 : x
  2. Step 2: Convert to fraction form
    2,104.23/3,156.52 = 644.41/x
  3. Step 3: Cross multiply
    2,104.23x = 3,156.52 × 644.41
  4. Step 4: Simplify right side
    2,104.23x = 2,034,093.05
  5. Step 5: Solve for x
    x = 2,034,093.05/2,104.23
  6. Step 6: Final answer
    x = 966.67

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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.