Home / 3,629.40-5,440.36-1,439.68

Finding the Fourth Proportional to 3,629.40, 5,440.36 and 1,439.68

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Solution

The fourth proportional to 3,629.40, 5,440.36 and 1,439.68 is: 2,158.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,629.40 : 5,440.36 = 1,439.68 : x
  2. Step 2: Convert to fraction form
    3,629.40/5,440.36 = 1,439.68/x
  3. Step 3: Cross multiply
    3,629.40x = 5,440.36 × 1,439.68
  4. Step 4: Simplify right side
    3,629.40x = 7,832,377.48
  5. Step 5: Solve for x
    x = 7,832,377.48/3,629.40
  6. Step 6: Final answer
    x = 2,158.04

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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.