Home / 3,772.26-5,656.80-1,431.90

Finding the Fourth Proportional to 3,772.26, 5,656.80 and 1,431.90

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Solution

The fourth proportional to 3,772.26, 5,656.80 and 1,431.90 is: 2,147.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,772.26 : 5,656.80 = 1,431.90 : x
  2. Step 2: Convert to fraction form
    3,772.26/5,656.80 = 1,431.90/x
  3. Step 3: Cross multiply
    3,772.26x = 5,656.80 × 1,431.90
  4. Step 4: Simplify right side
    3,772.26x = 8,099,971.92
  5. Step 5: Solve for x
    x = 8,099,971.92/3,772.26
  6. Step 6: Final answer
    x = 2,147.25

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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.