Home / 3,942.60-5,905.80-2,711.40

Finding the Fourth Proportional to 3,942.60, 5,905.80 and 2,711.40

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Solution

The fourth proportional to 3,942.60, 5,905.80 and 2,711.40 is: 4,061.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.60 : 5,905.80 = 2,711.40 : x
  2. Step 2: Convert to fraction form
    3,942.60/5,905.80 = 2,711.40/x
  3. Step 3: Cross multiply
    3,942.60x = 5,905.80 × 2,711.40
  4. Step 4: Simplify right side
    3,942.60x = 16,012,986.12
  5. Step 5: Solve for x
    x = 16,012,986.12/3,942.60
  6. Step 6: Final answer
    x = 4,061.53

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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.