Home / 3,421.76-5,134.32-1,230.68

Finding the Fourth Proportional to 3,421.76, 5,134.32 and 1,230.68

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Solution

The fourth proportional to 3,421.76, 5,134.32 and 1,230.68 is: 1,846.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.76 : 5,134.32 = 1,230.68 : x
  2. Step 2: Convert to fraction form
    3,421.76/5,134.32 = 1,230.68/x
  3. Step 3: Cross multiply
    3,421.76x = 5,134.32 × 1,230.68
  4. Step 4: Simplify right side
    3,421.76x = 6,318,704.94
  5. Step 5: Solve for x
    x = 6,318,704.94/3,421.76
  6. Step 6: Final answer
    x = 1,846.62

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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.