Home / 5,121.07-7,077.39-3,861.67

Finding the Fourth Proportional to 5,121.07, 7,077.39 and 3,861.67

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Solution

The fourth proportional to 5,121.07, 7,077.39 and 3,861.67 is: 5,336.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.07 : 7,077.39 = 3,861.67 : x
  2. Step 2: Convert to fraction form
    5,121.07/7,077.39 = 3,861.67/x
  3. Step 3: Cross multiply
    5,121.07x = 7,077.39 × 3,861.67
  4. Step 4: Simplify right side
    5,121.07x = 27,330,544.64
  5. Step 5: Solve for x
    x = 27,330,544.64/5,121.07
  6. Step 6: Final answer
    x = 5,336.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.