Home / 3,921.15-5,882.44-1,288.80

Finding the Fourth Proportional to 3,921.15, 5,882.44 and 1,288.80

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Solution

The fourth proportional to 3,921.15, 5,882.44 and 1,288.80 is: 1,933.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.15 : 5,882.44 = 1,288.80 : x
  2. Step 2: Convert to fraction form
    3,921.15/5,882.44 = 1,288.80/x
  3. Step 3: Cross multiply
    3,921.15x = 5,882.44 × 1,288.80
  4. Step 4: Simplify right side
    3,921.15x = 7,581,282.31
  5. Step 5: Solve for x
    x = 7,581,282.31/3,921.15
  6. Step 6: Final answer
    x = 1,933.44

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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.