Home / 3,421.53-5,134.22-1,861.65

Finding the Fourth Proportional to 3,421.53, 5,134.22 and 1,861.65

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Solution

The fourth proportional to 3,421.53, 5,134.22 and 1,861.65 is: 2,793.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.53 : 5,134.22 = 1,861.65 : x
  2. Step 2: Convert to fraction form
    3,421.53/5,134.22 = 1,861.65/x
  3. Step 3: Cross multiply
    3,421.53x = 5,134.22 × 1,861.65
  4. Step 4: Simplify right side
    3,421.53x = 9,558,094.99
  5. Step 5: Solve for x
    x = 9,558,094.99/3,421.53
  6. Step 6: Final answer
    x = 2,793.51

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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.