Home / 5,197.03-7,171.92-2,839.21

Finding the Fourth Proportional to 5,197.03, 7,171.92 and 2,839.21

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Solution

The fourth proportional to 5,197.03, 7,171.92 and 2,839.21 is: 3,918.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,197.03 : 7,171.92 = 2,839.21 : x
  2. Step 2: Convert to fraction form
    5,197.03/7,171.92 = 2,839.21/x
  3. Step 3: Cross multiply
    5,197.03x = 7,171.92 × 2,839.21
  4. Step 4: Simplify right side
    5,197.03x = 20,362,551.12
  5. Step 5: Solve for x
    x = 20,362,551.12/5,197.03
  6. Step 6: Final answer
    x = 3,918.12

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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.