Home / 5,197.34-7,172.12-2,839.47

Finding the Fourth Proportional to 5,197.34, 7,172.12 and 2,839.47

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Solution

The fourth proportional to 5,197.34, 7,172.12 and 2,839.47 is: 3,918.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,197.34 : 7,172.12 = 2,839.47 : x
  2. Step 2: Convert to fraction form
    5,197.34/7,172.12 = 2,839.47/x
  3. Step 3: Cross multiply
    5,197.34x = 7,172.12 × 2,839.47
  4. Step 4: Simplify right side
    5,197.34x = 20,365,005.38
  5. Step 5: Solve for x
    x = 20,365,005.38/5,197.34
  6. Step 6: Final answer
    x = 3,918.36

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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.