Home / 3,163.40-4,389.32-3,072.68

Finding the Fourth Proportional to 3,163.40, 4,389.32 and 3,072.68

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Solution

The fourth proportional to 3,163.40, 4,389.32 and 3,072.68 is: 4,263.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,163.40 : 4,389.32 = 3,072.68 : x
  2. Step 2: Convert to fraction form
    3,163.40/4,389.32 = 3,072.68/x
  3. Step 3: Cross multiply
    3,163.40x = 4,389.32 × 3,072.68
  4. Step 4: Simplify right side
    3,163.40x = 13,486,975.78
  5. Step 5: Solve for x
    x = 13,486,975.78/3,163.40
  6. Step 6: Final answer
    x = 4,263.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.