Home / 3,972.12-5,485.68-3,013.44

Finding the Fourth Proportional to 3,972.12, 5,485.68 and 3,013.44

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Solution

The fourth proportional to 3,972.12, 5,485.68 and 3,013.44 is: 4,161.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.12 : 5,485.68 = 3,013.44 : x
  2. Step 2: Convert to fraction form
    3,972.12/5,485.68 = 3,013.44/x
  3. Step 3: Cross multiply
    3,972.12x = 5,485.68 × 3,013.44
  4. Step 4: Simplify right side
    3,972.12x = 16,530,767.54
  5. Step 5: Solve for x
    x = 16,530,767.54/3,972.12
  6. Step 6: Final answer
    x = 4,161.70

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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.