Home / 2,107.49-3,160.31-1,120.08

Finding the Fourth Proportional to 2,107.49, 3,160.31 and 1,120.08

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Solution

The fourth proportional to 2,107.49, 3,160.31 and 1,120.08 is: 1,679.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.49 : 3,160.31 = 1,120.08 : x
  2. Step 2: Convert to fraction form
    2,107.49/3,160.31 = 1,120.08/x
  3. Step 3: Cross multiply
    2,107.49x = 3,160.31 × 1,120.08
  4. Step 4: Simplify right side
    2,107.49x = 3,539,794.42
  5. Step 5: Solve for x
    x = 3,539,794.42/2,107.49
  6. Step 6: Final answer
    x = 1,679.63

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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.