Home / 3,239.99-4,861.57-1,390.56

Finding the Fourth Proportional to 3,239.99, 4,861.57 and 1,390.56

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Solution

The fourth proportional to 3,239.99, 4,861.57 and 1,390.56 is: 2,086.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,239.99 : 4,861.57 = 1,390.56 : x
  2. Step 2: Convert to fraction form
    3,239.99/4,861.57 = 1,390.56/x
  3. Step 3: Cross multiply
    3,239.99x = 4,861.57 × 1,390.56
  4. Step 4: Simplify right side
    3,239.99x = 6,760,304.78
  5. Step 5: Solve for x
    x = 6,760,304.78/3,239.99
  6. Step 6: Final answer
    x = 2,086.52

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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.