Home / 1,679.75-2,519.35-1,191.32

Finding the Fourth Proportional to 1,679.75, 2,519.35 and 1,191.32

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Solution

The fourth proportional to 1,679.75, 2,519.35 and 1,191.32 is: 1,786.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.75 : 2,519.35 = 1,191.32 : x
  2. Step 2: Convert to fraction form
    1,679.75/2,519.35 = 1,191.32/x
  3. Step 3: Cross multiply
    1,679.75x = 2,519.35 × 1,191.32
  4. Step 4: Simplify right side
    1,679.75x = 3,001,352.04
  5. Step 5: Solve for x
    x = 3,001,352.04/1,679.75
  6. Step 6: Final answer
    x = 1,786.78

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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.