Home / 3,158.21-4,734.61-1,211.81

Finding the Fourth Proportional to 3,158.21, 4,734.61 and 1,211.81

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Solution

The fourth proportional to 3,158.21, 4,734.61 and 1,211.81 is: 1,816.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,158.21 : 4,734.61 = 1,211.81 : x
  2. Step 2: Convert to fraction form
    3,158.21/4,734.61 = 1,211.81/x
  3. Step 3: Cross multiply
    3,158.21x = 4,734.61 × 1,211.81
  4. Step 4: Simplify right side
    3,158.21x = 5,737,421.04
  5. Step 5: Solve for x
    x = 5,737,421.04/3,158.21
  6. Step 6: Final answer
    x = 1,816.67

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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.