Home / 3,938.87-5,906.54-2,089.55

Finding the Fourth Proportional to 3,938.87, 5,906.54 and 2,089.55

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Solution

The fourth proportional to 3,938.87, 5,906.54 and 2,089.55 is: 3,133.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.87 : 5,906.54 = 2,089.55 : x
  2. Step 2: Convert to fraction form
    3,938.87/5,906.54 = 2,089.55/x
  3. Step 3: Cross multiply
    3,938.87x = 5,906.54 × 2,089.55
  4. Step 4: Simplify right side
    3,938.87x = 12,341,970.68
  5. Step 5: Solve for x
    x = 12,341,970.68/3,938.87
  6. Step 6: Final answer
    x = 3,133.38

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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.