Home / 1,992.03-2,748.95-1,107.81

Finding the Fourth Proportional to 1,992.03, 2,748.95 and 1,107.81

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Solution

The fourth proportional to 1,992.03, 2,748.95 and 1,107.81 is: 1,528.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.03 : 2,748.95 = 1,107.81 : x
  2. Step 2: Convert to fraction form
    1,992.03/2,748.95 = 1,107.81/x
  3. Step 3: Cross multiply
    1,992.03x = 2,748.95 × 1,107.81
  4. Step 4: Simplify right side
    1,992.03x = 3,045,314.30
  5. Step 5: Solve for x
    x = 3,045,314.30/1,992.03
  6. Step 6: Final answer
    x = 1,528.75

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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.