Home / 5,197.30-7,172.16-2,839.46

Finding the Fourth Proportional to 5,197.30, 7,172.16 and 2,839.46

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Solution

The fourth proportional to 5,197.30, 7,172.16 and 2,839.46 is: 3,918.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,197.30 : 7,172.16 = 2,839.46 : x
  2. Step 2: Convert to fraction form
    5,197.30/7,172.16 = 2,839.46/x
  3. Step 3: Cross multiply
    5,197.30x = 7,172.16 × 2,839.46
  4. Step 4: Simplify right side
    5,197.30x = 20,365,061.43
  5. Step 5: Solve for x
    x = 20,365,061.43/5,197.30
  6. Step 6: Final answer
    x = 3,918.39

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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.