Home / 2,163.81-3,250.91-1,385.34

Finding the Fourth Proportional to 2,163.81, 3,250.91 and 1,385.34

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Solution

The fourth proportional to 2,163.81, 3,250.91 and 1,385.34 is: 2,081.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163.81 : 3,250.91 = 1,385.34 : x
  2. Step 2: Convert to fraction form
    2,163.81/3,250.91 = 1,385.34/x
  3. Step 3: Cross multiply
    2,163.81x = 3,250.91 × 1,385.34
  4. Step 4: Simplify right side
    2,163.81x = 4,503,596.54
  5. Step 5: Solve for x
    x = 4,503,596.54/2,163.81
  6. Step 6: Final answer
    x = 2,081.33

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1.5x scale

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.