Home / 5,197.21-7,171.97-2,839.30

Finding the Fourth Proportional to 5,197.21, 7,171.97 and 2,839.30

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Solution

The fourth proportional to 5,197.21, 7,171.97 and 2,839.30 is: 3,918.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,197.21 : 7,171.97 = 2,839.30 : x
  2. Step 2: Convert to fraction form
    5,197.21/7,171.97 = 2,839.30/x
  3. Step 3: Cross multiply
    5,197.21x = 7,171.97 × 2,839.30
  4. Step 4: Simplify right side
    5,197.21x = 20,363,342.29
  5. Step 5: Solve for x
    x = 20,363,342.29/5,197.21
  6. Step 6: Final answer
    x = 3,918.13

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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.