Home / 3,990.14-5,979.53-2,941.90

Finding the Fourth Proportional to 3,990.14, 5,979.53 and 2,941.90

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Solution

The fourth proportional to 3,990.14, 5,979.53 and 2,941.90 is: 4,408.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.14 : 5,979.53 = 2,941.90 : x
  2. Step 2: Convert to fraction form
    3,990.14/5,979.53 = 2,941.90/x
  3. Step 3: Cross multiply
    3,990.14x = 5,979.53 × 2,941.90
  4. Step 4: Simplify right side
    3,990.14x = 17,591,171.71
  5. Step 5: Solve for x
    x = 17,591,171.71/3,990.14
  6. Step 6: Final answer
    x = 4,408.67

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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.