Home / 3,992.28-5,989.38-1,219

Finding the Fourth Proportional to 3,992.28, 5,989.38 and 1,219

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Solution

The fourth proportional to 3,992.28, 5,989.38 and 1,219 is: 1,828.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.28 : 5,989.38 = 1,219 : x
  2. Step 2: Convert to fraction form
    3,992.28/5,989.38 = 1,219/x
  3. Step 3: Cross multiply
    3,992.28x = 5,989.38 × 1,219
  4. Step 4: Simplify right side
    3,992.28x = 7,301,054.22
  5. Step 5: Solve for x
    x = 7,301,054.22/3,992.28
  6. Step 6: Final answer
    x = 1,828.79

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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.