Home / 5,197.89-7,172.67-2,840.03

Finding the Fourth Proportional to 5,197.89, 7,172.67 and 2,840.03

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Solution

The fourth proportional to 5,197.89, 7,172.67 and 2,840.03 is: 3,919.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,197.89 : 7,172.67 = 2,840.03 : x
  2. Step 2: Convert to fraction form
    5,197.89/7,172.67 = 2,840.03/x
  3. Step 3: Cross multiply
    5,197.89x = 7,172.67 × 2,840.03
  4. Step 4: Simplify right side
    5,197.89x = 20,370,597.98
  5. Step 5: Solve for x
    x = 20,370,597.98/5,197.89
  6. Step 6: Final answer
    x = 3,919.01

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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.