Home / 1,899.45-2,849.64-1,120.11

Finding the Fourth Proportional to 1,899.45, 2,849.64 and 1,120.11

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Solution

The fourth proportional to 1,899.45, 2,849.64 and 1,120.11 is: 1,680.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,899.45 : 2,849.64 = 1,120.11 : x
  2. Step 2: Convert to fraction form
    1,899.45/2,849.64 = 1,120.11/x
  3. Step 3: Cross multiply
    1,899.45x = 2,849.64 × 1,120.11
  4. Step 4: Simplify right side
    1,899.45x = 3,191,910.26
  5. Step 5: Solve for x
    x = 3,191,910.26/1,899.45
  6. Step 6: Final answer
    x = 1,680.44

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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.