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Finding the Fourth Proportional to 9,806.60, 14,700.99 and 3,959.21

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Solution

The fourth proportional to 9,806.60, 14,700.99 and 3,959.21 is: 5,935.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,806.60 : 14,700.99 = 3,959.21 : x
  2. Step 2: Convert to fraction form
    9,806.60/14,700.99 = 3,959.21/x
  3. Step 3: Cross multiply
    9,806.60x = 14,700.99 × 3,959.21
  4. Step 4: Simplify right side
    9,806.60x = 58,204,306.62
  5. Step 5: Solve for x
    x = 58,204,306.62/9,806.60
  6. Step 6: Final answer
    x = 5,935.22

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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.