Home / 3,429.64-5,144.70-1,120.36

Finding the Fourth Proportional to 3,429.64, 5,144.70 and 1,120.36

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Solution

The fourth proportional to 3,429.64, 5,144.70 and 1,120.36 is: 1,680.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,429.64 : 5,144.70 = 1,120.36 : x
  2. Step 2: Convert to fraction form
    3,429.64/5,144.70 = 1,120.36/x
  3. Step 3: Cross multiply
    3,429.64x = 5,144.70 × 1,120.36
  4. Step 4: Simplify right side
    3,429.64x = 5,763,916.09
  5. Step 5: Solve for x
    x = 5,763,916.09/3,429.64
  6. Step 6: Final answer
    x = 1,680.62

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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.