Home / 3,938.96-5,906.74-2,089.68

Finding the Fourth Proportional to 3,938.96, 5,906.74 and 2,089.68

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Solution

The fourth proportional to 3,938.96, 5,906.74 and 2,089.68 is: 3,133.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.96 : 5,906.74 = 2,089.68 : x
  2. Step 2: Convert to fraction form
    3,938.96/5,906.74 = 2,089.68/x
  3. Step 3: Cross multiply
    3,938.96x = 5,906.74 × 2,089.68
  4. Step 4: Simplify right side
    3,938.96x = 12,343,196.44
  5. Step 5: Solve for x
    x = 12,343,196.44/3,938.96
  6. Step 6: Final answer
    x = 3,133.62

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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.