Home / 6,387.45-9,579.33-2,689.65

Finding the Fourth Proportional to 6,387.45, 9,579.33 and 2,689.65

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Solution

The fourth proportional to 6,387.45, 9,579.33 and 2,689.65 is: 4,033.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,387.45 : 9,579.33 = 2,689.65 : x
  2. Step 2: Convert to fraction form
    6,387.45/9,579.33 = 2,689.65/x
  3. Step 3: Cross multiply
    6,387.45x = 9,579.33 × 2,689.65
  4. Step 4: Simplify right side
    6,387.45x = 25,765,044.93
  5. Step 5: Solve for x
    x = 25,765,044.93/6,387.45
  6. Step 6: Final answer
    x = 4,033.70

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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.