Home / 3,421.94-5,135.18-1,230.66

Finding the Fourth Proportional to 3,421.94, 5,135.18 and 1,230.66

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Solution

The fourth proportional to 3,421.94, 5,135.18 and 1,230.66 is: 1,846.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.94 : 5,135.18 = 1,230.66 : x
  2. Step 2: Convert to fraction form
    3,421.94/5,135.18 = 1,230.66/x
  3. Step 3: Cross multiply
    3,421.94x = 5,135.18 × 1,230.66
  4. Step 4: Simplify right side
    3,421.94x = 6,319,654.47
  5. Step 5: Solve for x
    x = 6,319,654.47/3,421.94
  6. Step 6: Final answer
    x = 1,846.81

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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.