Home / 8,119.38-12,185.47-4,170.48

Finding the Fourth Proportional to 8,119.38, 12,185.47 and 4,170.48

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Solution

The fourth proportional to 8,119.38, 12,185.47 and 4,170.48 is: 6,259.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.38 : 12,185.47 = 4,170.48 : x
  2. Step 2: Convert to fraction form
    8,119.38/12,185.47 = 4,170.48/x
  3. Step 3: Cross multiply
    8,119.38x = 12,185.47 × 4,170.48
  4. Step 4: Simplify right side
    8,119.38x = 50,819,258.93
  5. Step 5: Solve for x
    x = 50,819,258.93/8,119.38
  6. Step 6: Final answer
    x = 6,259.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.