Home / 3,421.24-5,131.82-956.21

Finding the Fourth Proportional to 3,421.24, 5,131.82 and 956.21

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Solution

The fourth proportional to 3,421.24, 5,131.82 and 956.21 is: 1,434.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.24 : 5,131.82 = 956.21 : x
  2. Step 2: Convert to fraction form
    3,421.24/5,131.82 = 956.21/x
  3. Step 3: Cross multiply
    3,421.24x = 5,131.82 × 956.21
  4. Step 4: Simplify right side
    3,421.24x = 4,907,074.33
  5. Step 5: Solve for x
    x = 4,907,074.33/3,421.24
  6. Step 6: Final answer
    x = 1,434.30

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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.