Home / 3,384.15-5,072.30-1,408.68

Finding the Fourth Proportional to 3,384.15, 5,072.30 and 1,408.68

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Solution

The fourth proportional to 3,384.15, 5,072.30 and 1,408.68 is: 2,111.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,384.15 : 5,072.30 = 1,408.68 : x
  2. Step 2: Convert to fraction form
    3,384.15/5,072.30 = 1,408.68/x
  3. Step 3: Cross multiply
    3,384.15x = 5,072.30 × 1,408.68
  4. Step 4: Simplify right side
    3,384.15x = 7,145,243.62
  5. Step 5: Solve for x
    x = 7,145,243.62/3,384.15
  6. Step 6: Final answer
    x = 2,111.38

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.