Home / 3,922.40-5,882.36-1,289.30

Finding the Fourth Proportional to 3,922.40, 5,882.36 and 1,289.30

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Solution

The fourth proportional to 3,922.40, 5,882.36 and 1,289.30 is: 1,933.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922.40 : 5,882.36 = 1,289.30 : x
  2. Step 2: Convert to fraction form
    3,922.40/5,882.36 = 1,289.30/x
  3. Step 3: Cross multiply
    3,922.40x = 5,882.36 × 1,289.30
  4. Step 4: Simplify right side
    3,922.40x = 7,584,120.30
  5. Step 5: Solve for x
    x = 7,584,120.30/3,922.40
  6. Step 6: Final answer
    x = 1,933.54

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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.