Home / 3,453.45-5,178.56-1,112.91

Finding the Fourth Proportional to 3,453.45, 5,178.56 and 1,112.91

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Solution

The fourth proportional to 3,453.45, 5,178.56 and 1,112.91 is: 1,668.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,453.45 : 5,178.56 = 1,112.91 : x
  2. Step 2: Convert to fraction form
    3,453.45/5,178.56 = 1,112.91/x
  3. Step 3: Cross multiply
    3,453.45x = 5,178.56 × 1,112.91
  4. Step 4: Simplify right side
    3,453.45x = 5,763,265.65
  5. Step 5: Solve for x
    x = 5,763,265.65/3,453.45
  6. Step 6: Final answer
    x = 1,668.84

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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.