Home / 3,960.18-5,942.28-1,621.90

Finding the Fourth Proportional to 3,960.18, 5,942.28 and 1,621.90

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Solution

The fourth proportional to 3,960.18, 5,942.28 and 1,621.90 is: 2,433.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.18 : 5,942.28 = 1,621.90 : x
  2. Step 2: Convert to fraction form
    3,960.18/5,942.28 = 1,621.90/x
  3. Step 3: Cross multiply
    3,960.18x = 5,942.28 × 1,621.90
  4. Step 4: Simplify right side
    3,960.18x = 9,637,783.93
  5. Step 5: Solve for x
    x = 9,637,783.93/3,960.18
  6. Step 6: Final answer
    x = 2,433.67

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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.