Home / 5,199.76-7,175.78-2,842.12

Finding the Fourth Proportional to 5,199.76, 7,175.78 and 2,842.12

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Solution

The fourth proportional to 5,199.76, 7,175.78 and 2,842.12 is: 3,922.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,199.76 : 7,175.78 = 2,842.12 : x
  2. Step 2: Convert to fraction form
    5,199.76/7,175.78 = 2,842.12/x
  3. Step 3: Cross multiply
    5,199.76x = 7,175.78 × 2,842.12
  4. Step 4: Simplify right side
    5,199.76x = 20,394,427.85
  5. Step 5: Solve for x
    x = 20,394,427.85/5,199.76
  6. Step 6: Final answer
    x = 3,922.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.