Home / 3,629.81-5,445.02-1,438.56

Finding the Fourth Proportional to 3,629.81, 5,445.02 and 1,438.56

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Solution

The fourth proportional to 3,629.81, 5,445.02 and 1,438.56 is: 2,157.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,629.81 : 5,445.02 = 1,438.56 : x
  2. Step 2: Convert to fraction form
    3,629.81/5,445.02 = 1,438.56/x
  3. Step 3: Cross multiply
    3,629.81x = 5,445.02 × 1,438.56
  4. Step 4: Simplify right side
    3,629.81x = 7,832,991.57
  5. Step 5: Solve for x
    x = 7,832,991.57/3,629.81
  6. Step 6: Final answer
    x = 2,157.96

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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.