Home / 5,119.46-7,679.33-1,421.96

Finding the Fourth Proportional to 5,119.46, 7,679.33 and 1,421.96

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Solution

The fourth proportional to 5,119.46, 7,679.33 and 1,421.96 is: 2,132.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.46 : 7,679.33 = 1,421.96 : x
  2. Step 2: Convert to fraction form
    5,119.46/7,679.33 = 1,421.96/x
  3. Step 3: Cross multiply
    5,119.46x = 7,679.33 × 1,421.96
  4. Step 4: Simplify right side
    5,119.46x = 10,919,654.58
  5. Step 5: Solve for x
    x = 10,919,654.58/5,119.46
  6. Step 6: Final answer
    x = 2,132.97

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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.