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Finding the Fourth Proportional to 6,663.71, 9,992.19 and 3,891.08

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Solution

The fourth proportional to 6,663.71, 9,992.19 and 3,891.08 is: 5,834.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,663.71 : 9,992.19 = 3,891.08 : x
  2. Step 2: Convert to fraction form
    6,663.71/9,992.19 = 3,891.08/x
  3. Step 3: Cross multiply
    6,663.71x = 9,992.19 × 3,891.08
  4. Step 4: Simplify right side
    6,663.71x = 38,880,410.67
  5. Step 5: Solve for x
    x = 38,880,410.67/6,663.71
  6. Step 6: Final answer
    x = 5,834.65

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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.