Home / 3,930.19-5,421.30-2,336.26

Finding the Fourth Proportional to 3,930.19, 5,421.30 and 2,336.26

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Solution

The fourth proportional to 3,930.19, 5,421.30 and 2,336.26 is: 3,222.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.19 : 5,421.30 = 2,336.26 : x
  2. Step 2: Convert to fraction form
    3,930.19/5,421.30 = 2,336.26/x
  3. Step 3: Cross multiply
    3,930.19x = 5,421.30 × 2,336.26
  4. Step 4: Simplify right side
    3,930.19x = 12,665,566.34
  5. Step 5: Solve for x
    x = 12,665,566.34/3,930.19
  6. Step 6: Final answer
    x = 3,222.63

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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.