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Finding the Fourth Proportional to 3,605.96, 5,408.81 and 1,384.22

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Solution

The fourth proportional to 3,605.96, 5,408.81 and 1,384.22 is: 2,076.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,605.96 : 5,408.81 = 1,384.22 : x
  2. Step 2: Convert to fraction form
    3,605.96/5,408.81 = 1,384.22/x
  3. Step 3: Cross multiply
    3,605.96x = 5,408.81 × 1,384.22
  4. Step 4: Simplify right side
    3,605.96x = 7,486,949.01
  5. Step 5: Solve for x
    x = 7,486,949.01/3,605.96
  6. Step 6: Final answer
    x = 2,076.27

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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.