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Finding the Fourth Proportional to 6,651.81, 9,979.07 and 2,491.72

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Solution

The fourth proportional to 6,651.81, 9,979.07 and 2,491.72 is: 3,738.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,651.81 : 9,979.07 = 2,491.72 : x
  2. Step 2: Convert to fraction form
    6,651.81/9,979.07 = 2,491.72/x
  3. Step 3: Cross multiply
    6,651.81x = 9,979.07 × 2,491.72
  4. Step 4: Simplify right side
    6,651.81x = 24,865,010.89
  5. Step 5: Solve for x
    x = 24,865,010.89/6,651.81
  6. Step 6: Final answer
    x = 3,738.08

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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.