Home / 2,986.91-4,480.19-1,427.99

Finding the Fourth Proportional to 2,986.91, 4,480.19 and 1,427.99

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Solution

The fourth proportional to 2,986.91, 4,480.19 and 1,427.99 is: 2,141.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.91 : 4,480.19 = 1,427.99 : x
  2. Step 2: Convert to fraction form
    2,986.91/4,480.19 = 1,427.99/x
  3. Step 3: Cross multiply
    2,986.91x = 4,480.19 × 1,427.99
  4. Step 4: Simplify right side
    2,986.91x = 6,397,642.45
  5. Step 5: Solve for x
    x = 6,397,642.45/2,986.91
  6. Step 6: Final answer
    x = 2,141.90

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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.