Home / 2,619.61-3,933.06-1,321.99

Finding the Fourth Proportional to 2,619.61, 3,933.06 and 1,321.99

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Solution

The fourth proportional to 2,619.61, 3,933.06 and 1,321.99 is: 1,984.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.61 : 3,933.06 = 1,321.99 : x
  2. Step 2: Convert to fraction form
    2,619.61/3,933.06 = 1,321.99/x
  3. Step 3: Cross multiply
    2,619.61x = 3,933.06 × 1,321.99
  4. Step 4: Simplify right side
    2,619.61x = 5,199,465.99
  5. Step 5: Solve for x
    x = 5,199,465.99/2,619.61
  6. Step 6: Final answer
    x = 1,984.82

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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.