Home / 5,415.96-8,127.60-2,643.96

Finding the Fourth Proportional to 5,415.96, 8,127.60 and 2,643.96

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Solution

The fourth proportional to 5,415.96, 8,127.60 and 2,643.96 is: 3,967.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.96 : 8,127.60 = 2,643.96 : x
  2. Step 2: Convert to fraction form
    5,415.96/8,127.60 = 2,643.96/x
  3. Step 3: Cross multiply
    5,415.96x = 8,127.60 × 2,643.96
  4. Step 4: Simplify right side
    5,415.96x = 21,489,049.30
  5. Step 5: Solve for x
    x = 21,489,049.30/5,415.96
  6. Step 6: Final answer
    x = 3,967.73

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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.