Home / 3,453.60-5,176.80-1,891.20

Finding the Fourth Proportional to 3,453.60, 5,176.80 and 1,891.20

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Solution

The fourth proportional to 3,453.60, 5,176.80 and 1,891.20 is: 2,834.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,453.60 : 5,176.80 = 1,891.20 : x
  2. Step 2: Convert to fraction form
    3,453.60/5,176.80 = 1,891.20/x
  3. Step 3: Cross multiply
    3,453.60x = 5,176.80 × 1,891.20
  4. Step 4: Simplify right side
    3,453.60x = 9,790,364.16
  5. Step 5: Solve for x
    x = 9,790,364.16/3,453.60
  6. Step 6: Final answer
    x = 2,834.83

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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.