Home / 3,200.70-4,802.19-1,121.28

Finding the Fourth Proportional to 3,200.70, 4,802.19 and 1,121.28

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Solution

The fourth proportional to 3,200.70, 4,802.19 and 1,121.28 is: 1,682.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,200.70 : 4,802.19 = 1,121.28 : x
  2. Step 2: Convert to fraction form
    3,200.70/4,802.19 = 1,121.28/x
  3. Step 3: Cross multiply
    3,200.70x = 4,802.19 × 1,121.28
  4. Step 4: Simplify right side
    3,200.70x = 5,384,599.60
  5. Step 5: Solve for x
    x = 5,384,599.60/3,200.70
  6. Step 6: Final answer
    x = 1,682.32

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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.