Home / 2,851.75-4,287.35-2,621.31

Finding the Fourth Proportional to 2,851.75, 4,287.35 and 2,621.31

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Solution

The fourth proportional to 2,851.75, 4,287.35 and 2,621.31 is: 3,940.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,851.75 : 4,287.35 = 2,621.31 : x
  2. Step 2: Convert to fraction form
    2,851.75/4,287.35 = 2,621.31/x
  3. Step 3: Cross multiply
    2,851.75x = 4,287.35 × 2,621.31
  4. Step 4: Simplify right side
    2,851.75x = 11,238,473.43
  5. Step 5: Solve for x
    x = 11,238,473.43/2,851.75
  6. Step 6: Final answer
    x = 3,940.90

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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.