Home / 7,619.90-11,429.85-2,689.83

Finding the Fourth Proportional to 7,619.90, 11,429.85 and 2,689.83

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Solution

The fourth proportional to 7,619.90, 11,429.85 and 2,689.83 is: 4,034.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,619.90 : 11,429.85 = 2,689.83 : x
  2. Step 2: Convert to fraction form
    7,619.90/11,429.85 = 2,689.83/x
  3. Step 3: Cross multiply
    7,619.90x = 11,429.85 × 2,689.83
  4. Step 4: Simplify right side
    7,619.90x = 30,744,353.43
  5. Step 5: Solve for x
    x = 30,744,353.43/7,619.90
  6. Step 6: Final answer
    x = 4,034.75

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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.