Home / 5,112.82-7,667.60-1,992.62

Finding the Fourth Proportional to 5,112.82, 7,667.60 and 1,992.62

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Solution

The fourth proportional to 5,112.82, 7,667.60 and 1,992.62 is: 2,988.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.82 : 7,667.60 = 1,992.62 : x
  2. Step 2: Convert to fraction form
    5,112.82/7,667.60 = 1,992.62/x
  3. Step 3: Cross multiply
    5,112.82x = 7,667.60 × 1,992.62
  4. Step 4: Simplify right side
    5,112.82x = 15,278,613.11
  5. Step 5: Solve for x
    x = 15,278,613.11/5,112.82
  6. Step 6: Final answer
    x = 2,988.29

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1.5x scale

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.