Home / 2,889.24-3,986.70-1,647

Finding the Fourth Proportional to 2,889.24, 3,986.70 and 1,647

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Solution

The fourth proportional to 2,889.24, 3,986.70 and 1,647 is: 2,272.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889.24 : 3,986.70 = 1,647 : x
  2. Step 2: Convert to fraction form
    2,889.24/3,986.70 = 1,647/x
  3. Step 3: Cross multiply
    2,889.24x = 3,986.70 × 1,647
  4. Step 4: Simplify right side
    2,889.24x = 6,566,094.90
  5. Step 5: Solve for x
    x = 6,566,094.90/2,889.24
  6. Step 6: Final answer
    x = 2,272.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.