Home / 7,816.80-11,725.32-2,622.72

Finding the Fourth Proportional to 7,816.80, 11,725.32 and 2,622.72

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Solution

The fourth proportional to 7,816.80, 11,725.32 and 2,622.72 is: 3,934.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,816.80 : 11,725.32 = 2,622.72 : x
  2. Step 2: Convert to fraction form
    7,816.80/11,725.32 = 2,622.72/x
  3. Step 3: Cross multiply
    7,816.80x = 11,725.32 × 2,622.72
  4. Step 4: Simplify right side
    7,816.80x = 30,752,231.27
  5. Step 5: Solve for x
    x = 30,752,231.27/7,816.80
  6. Step 6: Final answer
    x = 3,934.12

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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.