Home / 2,889.44-3,987.42-1,563.15

Finding the Fourth Proportional to 2,889.44, 3,987.42 and 1,563.15

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Solution

The fourth proportional to 2,889.44, 3,987.42 and 1,563.15 is: 2,157.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889.44 : 3,987.42 = 1,563.15 : x
  2. Step 2: Convert to fraction form
    2,889.44/3,987.42 = 1,563.15/x
  3. Step 3: Cross multiply
    2,889.44x = 3,987.42 × 1,563.15
  4. Step 4: Simplify right side
    2,889.44x = 6,232,907.82
  5. Step 5: Solve for x
    x = 6,232,907.82/2,889.44
  6. Step 6: Final answer
    x = 2,157.13

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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.