Home / 2,889.67-3,987.74-1,563.37

Finding the Fourth Proportional to 2,889.67, 3,987.74 and 1,563.37

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Solution

The fourth proportional to 2,889.67, 3,987.74 and 1,563.37 is: 2,157.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889.67 : 3,987.74 = 1,563.37 : x
  2. Step 2: Convert to fraction form
    2,889.67/3,987.74 = 1,563.37/x
  3. Step 3: Cross multiply
    2,889.67x = 3,987.74 × 1,563.37
  4. Step 4: Simplify right side
    2,889.67x = 6,234,307.02
  5. Step 5: Solve for x
    x = 6,234,307.02/2,889.67
  6. Step 6: Final answer
    x = 2,157.45

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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.