Home / 7,816.80-10,786.86-4,279.95

Finding the Fourth Proportional to 7,816.80, 10,786.86 and 4,279.95

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Solution

The fourth proportional to 7,816.80, 10,786.86 and 4,279.95 is: 5,906.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,816.80 : 10,786.86 = 4,279.95 : x
  2. Step 2: Convert to fraction form
    7,816.80/10,786.86 = 4,279.95/x
  3. Step 3: Cross multiply
    7,816.80x = 10,786.86 × 4,279.95
  4. Step 4: Simplify right side
    7,816.80x = 46,167,221.46
  5. Step 5: Solve for x
    x = 46,167,221.46/7,816.80
  6. Step 6: Final answer
    x = 5,906.15

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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.