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Finding the Fourth Proportional to 3,505.87, 5,266.44 and 2,119.86

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Solution

The fourth proportional to 3,505.87, 5,266.44 and 2,119.86 is: 3,184.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,505.87 : 5,266.44 = 2,119.86 : x
  2. Step 2: Convert to fraction form
    3,505.87/5,266.44 = 2,119.86/x
  3. Step 3: Cross multiply
    3,505.87x = 5,266.44 × 2,119.86
  4. Step 4: Simplify right side
    3,505.87x = 11,164,115.50
  5. Step 5: Solve for x
    x = 11,164,115.50/3,505.87
  6. Step 6: Final answer
    x = 3,184.41

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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.