Home / 3,890.90-5,369.23-2,212.08

Finding the Fourth Proportional to 3,890.90, 5,369.23 and 2,212.08

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Solution

The fourth proportional to 3,890.90, 5,369.23 and 2,212.08 is: 3,052.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.90 : 5,369.23 = 2,212.08 : x
  2. Step 2: Convert to fraction form
    3,890.90/5,369.23 = 2,212.08/x
  3. Step 3: Cross multiply
    3,890.90x = 5,369.23 × 2,212.08
  4. Step 4: Simplify right side
    3,890.90x = 11,877,139.45
  5. Step 5: Solve for x
    x = 11,877,139.45/3,890.90
  6. Step 6: Final answer
    x = 3,052.54

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.