Home / 3,921.38-5,882.97-1,289.11

Finding the Fourth Proportional to 3,921.38, 5,882.97 and 1,289.11

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Solution

The fourth proportional to 3,921.38, 5,882.97 and 1,289.11 is: 1,933.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.38 : 5,882.97 = 1,289.11 : x
  2. Step 2: Convert to fraction form
    3,921.38/5,882.97 = 1,289.11/x
  3. Step 3: Cross multiply
    3,921.38x = 5,882.97 × 1,289.11
  4. Step 4: Simplify right side
    3,921.38x = 7,583,776.44
  5. Step 5: Solve for x
    x = 7,583,776.44/3,921.38
  6. Step 6: Final answer
    x = 1,933.96

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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.