Home / 5,173.40-7,142.46-3,186.64

Finding the Fourth Proportional to 5,173.40, 7,142.46 and 3,186.64

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Solution

The fourth proportional to 5,173.40, 7,142.46 and 3,186.64 is: 4,399.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,173.40 : 7,142.46 = 3,186.64 : x
  2. Step 2: Convert to fraction form
    5,173.40/7,142.46 = 3,186.64/x
  3. Step 3: Cross multiply
    5,173.40x = 7,142.46 × 3,186.64
  4. Step 4: Simplify right side
    5,173.40x = 22,760,448.73
  5. Step 5: Solve for x
    x = 22,760,448.73/5,173.40
  6. Step 6: Final answer
    x = 4,399.51

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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.