Home / 3,180.16-4,772.87-1,621.31

Finding the Fourth Proportional to 3,180.16, 4,772.87 and 1,621.31

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Solution

The fourth proportional to 3,180.16, 4,772.87 and 1,621.31 is: 2,433.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.16 : 4,772.87 = 1,621.31 : x
  2. Step 2: Convert to fraction form
    3,180.16/4,772.87 = 1,621.31/x
  3. Step 3: Cross multiply
    3,180.16x = 4,772.87 × 1,621.31
  4. Step 4: Simplify right side
    3,180.16x = 7,738,293.75
  5. Step 5: Solve for x
    x = 7,738,293.75/3,180.16
  6. Step 6: Final answer
    x = 2,433.31

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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.