Home / 3,485.03-5,227.78-1,405.05

Finding the Fourth Proportional to 3,485.03, 5,227.78 and 1,405.05

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Solution

The fourth proportional to 3,485.03, 5,227.78 and 1,405.05 is: 2,107.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,485.03 : 5,227.78 = 1,405.05 : x
  2. Step 2: Convert to fraction form
    3,485.03/5,227.78 = 1,405.05/x
  3. Step 3: Cross multiply
    3,485.03x = 5,227.78 × 1,405.05
  4. Step 4: Simplify right side
    3,485.03x = 7,345,305.60
  5. Step 5: Solve for x
    x = 7,345,305.60/3,485.03
  6. Step 6: Final answer
    x = 2,107.67

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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.