Home / 5,197.19-7,172.23-2,839.49

Finding the Fourth Proportional to 5,197.19, 7,172.23 and 2,839.49

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Solution

The fourth proportional to 5,197.19, 7,172.23 and 2,839.49 is: 3,918.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,197.19 : 7,172.23 = 2,839.49 : x
  2. Step 2: Convert to fraction form
    5,197.19/7,172.23 = 2,839.49/x
  3. Step 3: Cross multiply
    5,197.19x = 7,172.23 × 2,839.49
  4. Step 4: Simplify right side
    5,197.19x = 20,365,439.50
  5. Step 5: Solve for x
    x = 20,365,439.50/5,197.19
  6. Step 6: Final answer
    x = 3,918.55

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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.