Home / 7,820.88-11,727.12-3,433.20

Finding the Fourth Proportional to 7,820.88, 11,727.12 and 3,433.20

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Solution

The fourth proportional to 7,820.88, 11,727.12 and 3,433.20 is: 5,147.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,820.88 : 11,727.12 = 3,433.20 : x
  2. Step 2: Convert to fraction form
    7,820.88/11,727.12 = 3,433.20/x
  3. Step 3: Cross multiply
    7,820.88x = 11,727.12 × 3,433.20
  4. Step 4: Simplify right side
    7,820.88x = 40,261,548.38
  5. Step 5: Solve for x
    x = 40,261,548.38/7,820.88
  6. Step 6: Final answer
    x = 5,147.96

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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.