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Finding the Fourth Proportional to 3,950.81, 5,930.15 and 2,490.96

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Solution

The fourth proportional to 3,950.81, 5,930.15 and 2,490.96 is: 3,738.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,950.81 : 5,930.15 = 2,490.96 : x
  2. Step 2: Convert to fraction form
    3,950.81/5,930.15 = 2,490.96/x
  3. Step 3: Cross multiply
    3,950.81x = 5,930.15 × 2,490.96
  4. Step 4: Simplify right side
    3,950.81x = 14,771,753.99
  5. Step 5: Solve for x
    x = 14,771,753.99/3,950.81
  6. Step 6: Final answer
    x = 3,738.92

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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.