Home / 3,629.61-5,445.18-1,438.36

Finding the Fourth Proportional to 3,629.61, 5,445.18 and 1,438.36

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Solution

The fourth proportional to 3,629.61, 5,445.18 and 1,438.36 is: 2,157.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,629.61 : 5,445.18 = 1,438.36 : x
  2. Step 2: Convert to fraction form
    3,629.61/5,445.18 = 1,438.36/x
  3. Step 3: Cross multiply
    3,629.61x = 5,445.18 × 1,438.36
  4. Step 4: Simplify right side
    3,629.61x = 7,832,129.10
  5. Step 5: Solve for x
    x = 7,832,129.10/3,629.61
  6. Step 6: Final answer
    x = 2,157.84

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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.