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Finding the Fourth Proportional to 3,960.15, 5,946.22 and 3,145.03

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Solution

The fourth proportional to 3,960.15, 5,946.22 and 3,145.03 is: 4,722.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.15 : 5,946.22 = 3,145.03 : x
  2. Step 2: Convert to fraction form
    3,960.15/5,946.22 = 3,145.03/x
  3. Step 3: Cross multiply
    3,960.15x = 5,946.22 × 3,145.03
  4. Step 4: Simplify right side
    3,960.15x = 18,701,040.29
  5. Step 5: Solve for x
    x = 18,701,040.29/3,960.15
  6. Step 6: Final answer
    x = 4,722.31

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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.