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Finding the Fourth Proportional to 6,689.58, 10,028.89 and 3,406.65

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Solution

The fourth proportional to 6,689.58, 10,028.89 and 3,406.65 is: 5,107.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,689.58 : 10,028.89 = 3,406.65 : x
  2. Step 2: Convert to fraction form
    6,689.58/10,028.89 = 3,406.65/x
  3. Step 3: Cross multiply
    6,689.58x = 10,028.89 × 3,406.65
  4. Step 4: Simplify right side
    6,689.58x = 34,164,918.12
  5. Step 5: Solve for x
    x = 34,164,918.12/6,689.58
  6. Step 6: Final answer
    x = 5,107.18

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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.