Home / 4,243.88-5,861.68-3,123.20

Finding the Fourth Proportional to 4,243.88, 5,861.68 and 3,123.20

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Solution

The fourth proportional to 4,243.88, 5,861.68 and 3,123.20 is: 4,313.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,243.88 : 5,861.68 = 3,123.20 : x
  2. Step 2: Convert to fraction form
    4,243.88/5,861.68 = 3,123.20/x
  3. Step 3: Cross multiply
    4,243.88x = 5,861.68 × 3,123.20
  4. Step 4: Simplify right side
    4,243.88x = 18,307,198.98
  5. Step 5: Solve for x
    x = 18,307,198.98/4,243.88
  6. Step 6: Final answer
    x = 4,313.79

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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.