Home / 3,900.38-5,850.56-1,561.43

Finding the Fourth Proportional to 3,900.38, 5,850.56 and 1,561.43

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Solution

The fourth proportional to 3,900.38, 5,850.56 and 1,561.43 is: 2,342.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900.38 : 5,850.56 = 1,561.43 : x
  2. Step 2: Convert to fraction form
    3,900.38/5,850.56 = 1,561.43/x
  3. Step 3: Cross multiply
    3,900.38x = 5,850.56 × 1,561.43
  4. Step 4: Simplify right side
    3,900.38x = 9,135,258.43
  5. Step 5: Solve for x
    x = 9,135,258.43/3,900.38
  6. Step 6: Final answer
    x = 2,342.15

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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.