Home / 7,813.26-11,721.69-2,619

Finding the Fourth Proportional to 7,813.26, 11,721.69 and 2,619

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Solution

The fourth proportional to 7,813.26, 11,721.69 and 2,619 is: 3,929.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,813.26 : 11,721.69 = 2,619 : x
  2. Step 2: Convert to fraction form
    7,813.26/11,721.69 = 2,619/x
  3. Step 3: Cross multiply
    7,813.26x = 11,721.69 × 2,619
  4. Step 4: Simplify right side
    7,813.26x = 30,699,106.11
  5. Step 5: Solve for x
    x = 30,699,106.11/7,813.26
  6. Step 6: Final answer
    x = 3,929.10

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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.