Home / 3,171.21-4,756.38-1,321.84

Finding the Fourth Proportional to 3,171.21, 4,756.38 and 1,321.84

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Solution

The fourth proportional to 3,171.21, 4,756.38 and 1,321.84 is: 1,982.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.21 : 4,756.38 = 1,321.84 : x
  2. Step 2: Convert to fraction form
    3,171.21/4,756.38 = 1,321.84/x
  3. Step 3: Cross multiply
    3,171.21x = 4,756.38 × 1,321.84
  4. Step 4: Simplify right side
    3,171.21x = 6,287,173.34
  5. Step 5: Solve for x
    x = 6,287,173.34/3,171.21
  6. Step 6: Final answer
    x = 1,982.58

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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.