Home / 5,422.29-8,120.43-2,782.84

Finding the Fourth Proportional to 5,422.29, 8,120.43 and 2,782.84

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Solution

The fourth proportional to 5,422.29, 8,120.43 and 2,782.84 is: 4,167.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,422.29 : 8,120.43 = 2,782.84 : x
  2. Step 2: Convert to fraction form
    5,422.29/8,120.43 = 2,782.84/x
  3. Step 3: Cross multiply
    5,422.29x = 8,120.43 × 2,782.84
  4. Step 4: Simplify right side
    5,422.29x = 22,597,857.42
  5. Step 5: Solve for x
    x = 22,597,857.42/5,422.29
  6. Step 6: Final answer
    x = 4,167.59

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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.