Home / 7,816.20-10,786.32-4,279.47

Finding the Fourth Proportional to 7,816.20, 10,786.32 and 4,279.47

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Solution

The fourth proportional to 7,816.20, 10,786.32 and 4,279.47 is: 5,905.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,816.20 : 10,786.32 = 4,279.47 : x
  2. Step 2: Convert to fraction form
    7,816.20/10,786.32 = 4,279.47/x
  3. Step 3: Cross multiply
    7,816.20x = 10,786.32 × 4,279.47
  4. Step 4: Simplify right side
    7,816.20x = 46,159,732.85
  5. Step 5: Solve for x
    x = 46,159,732.85/7,816.20
  6. Step 6: Final answer
    x = 5,905.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.