Home / 3,930.14-5,421.21-2,336.22

Finding the Fourth Proportional to 3,930.14, 5,421.21 and 2,336.22

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Solution

The fourth proportional to 3,930.14, 5,421.21 and 2,336.22 is: 3,222.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.14 : 5,421.21 = 2,336.22 : x
  2. Step 2: Convert to fraction form
    3,930.14/5,421.21 = 2,336.22/x
  3. Step 3: Cross multiply
    3,930.14x = 5,421.21 × 2,336.22
  4. Step 4: Simplify right side
    3,930.14x = 12,665,139.23
  5. Step 5: Solve for x
    x = 12,665,139.23/3,930.14
  6. Step 6: Final answer
    x = 3,222.57

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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.