Home / 5,142.22-7,713.33-1,679.47

Finding the Fourth Proportional to 5,142.22, 7,713.33 and 1,679.47

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Solution

The fourth proportional to 5,142.22, 7,713.33 and 1,679.47 is: 2,519.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,142.22 : 7,713.33 = 1,679.47 : x
  2. Step 2: Convert to fraction form
    5,142.22/7,713.33 = 1,679.47/x
  3. Step 3: Cross multiply
    5,142.22x = 7,713.33 × 1,679.47
  4. Step 4: Simplify right side
    5,142.22x = 12,954,297.94
  5. Step 5: Solve for x
    x = 12,954,297.94/5,142.22
  6. Step 6: Final answer
    x = 2,519.20

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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.