Home / 3,219.31-4,829.25-1,271.05

Finding the Fourth Proportional to 3,219.31, 4,829.25 and 1,271.05

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Solution

The fourth proportional to 3,219.31, 4,829.25 and 1,271.05 is: 1,906.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.31 : 4,829.25 = 1,271.05 : x
  2. Step 2: Convert to fraction form
    3,219.31/4,829.25 = 1,271.05/x
  3. Step 3: Cross multiply
    3,219.31x = 4,829.25 × 1,271.05
  4. Step 4: Simplify right side
    3,219.31x = 6,138,218.21
  5. Step 5: Solve for x
    x = 6,138,218.21/3,219.31
  6. Step 6: Final answer
    x = 1,906.69

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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.