Home / 1,169.82-1,621.74-1,107.40

Finding the Fourth Proportional to 1,169.82, 1,621.74 and 1,107.40

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Solution

The fourth proportional to 1,169.82, 1,621.74 and 1,107.40 is: 1,535.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,169.82 : 1,621.74 = 1,107.40 : x
  2. Step 2: Convert to fraction form
    1,169.82/1,621.74 = 1,107.40/x
  3. Step 3: Cross multiply
    1,169.82x = 1,621.74 × 1,107.40
  4. Step 4: Simplify right side
    1,169.82x = 1,795,909.56
  5. Step 5: Solve for x
    x = 1,795,909.56/1,169.82
  6. Step 6: Final answer
    x = 1,535.21

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.