Home / 1,992.36-2,748.81-1,107.99

Finding the Fourth Proportional to 1,992.36, 2,748.81 and 1,107.99

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Solution

The fourth proportional to 1,992.36, 2,748.81 and 1,107.99 is: 1,528.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.36 : 2,748.81 = 1,107.99 : x
  2. Step 2: Convert to fraction form
    1,992.36/2,748.81 = 1,107.99/x
  3. Step 3: Cross multiply
    1,992.36x = 2,748.81 × 1,107.99
  4. Step 4: Simplify right side
    1,992.36x = 3,045,653.99
  5. Step 5: Solve for x
    x = 3,045,653.99/1,992.36
  6. Step 6: Final answer
    x = 1,528.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.