Home / 4,112.72-6,169.69-1,190.65

Finding the Fourth Proportional to 4,112.72, 6,169.69 and 1,190.65

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Solution

The fourth proportional to 4,112.72, 6,169.69 and 1,190.65 is: 1,786.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,112.72 : 6,169.69 = 1,190.65 : x
  2. Step 2: Convert to fraction form
    4,112.72/6,169.69 = 1,190.65/x
  3. Step 3: Cross multiply
    4,112.72x = 6,169.69 × 1,190.65
  4. Step 4: Simplify right side
    4,112.72x = 7,345,941.40
  5. Step 5: Solve for x
    x = 7,345,941.40/4,112.72
  6. Step 6: Final answer
    x = 1,786.15

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1.5x scale

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.