Home / 2,107.90-3,158.66-1,182.07

Finding the Fourth Proportional to 2,107.90, 3,158.66 and 1,182.07

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Solution

The fourth proportional to 2,107.90, 3,158.66 and 1,182.07 is: 1,771.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.90 : 3,158.66 = 1,182.07 : x
  2. Step 2: Convert to fraction form
    2,107.90/3,158.66 = 1,182.07/x
  3. Step 3: Cross multiply
    2,107.90x = 3,158.66 × 1,182.07
  4. Step 4: Simplify right side
    2,107.90x = 3,733,757.23
  5. Step 5: Solve for x
    x = 3,733,757.23/2,107.90
  6. Step 6: Final answer
    x = 1,771.32

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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.