Home / 4,912.05-7,369.40-2,139.33

Finding the Fourth Proportional to 4,912.05, 7,369.40 and 2,139.33

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Solution

The fourth proportional to 4,912.05, 7,369.40 and 2,139.33 is: 3,209.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,912.05 : 7,369.40 = 2,139.33 : x
  2. Step 2: Convert to fraction form
    4,912.05/7,369.40 = 2,139.33/x
  3. Step 3: Cross multiply
    4,912.05x = 7,369.40 × 2,139.33
  4. Step 4: Simplify right side
    4,912.05x = 15,765,578.50
  5. Step 5: Solve for x
    x = 15,765,578.50/4,912.05
  6. Step 6: Final answer
    x = 3,209.57

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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.