Home / 3,912.09-5,395.54-3,438.98

Finding the Fourth Proportional to 3,912.09, 5,395.54 and 3,438.98

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Solution

The fourth proportional to 3,912.09, 5,395.54 and 3,438.98 is: 4,743.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.09 : 5,395.54 = 3,438.98 : x
  2. Step 2: Convert to fraction form
    3,912.09/5,395.54 = 3,438.98/x
  3. Step 3: Cross multiply
    3,912.09x = 5,395.54 × 3,438.98
  4. Step 4: Simplify right side
    3,912.09x = 18,555,154.15
  5. Step 5: Solve for x
    x = 18,555,154.15/3,912.09
  6. Step 6: Final answer
    x = 4,743.03

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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.