Home / 7,816.25-10,786.70-4,279.49

Finding the Fourth Proportional to 7,816.25, 10,786.70 and 4,279.49

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Solution

The fourth proportional to 7,816.25, 10,786.70 and 4,279.49 is: 5,905.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,816.25 : 10,786.70 = 4,279.49 : x
  2. Step 2: Convert to fraction form
    7,816.25/10,786.70 = 4,279.49/x
  3. Step 3: Cross multiply
    7,816.25x = 10,786.70 × 4,279.49
  4. Step 4: Simplify right side
    7,816.25x = 46,161,574.78
  5. Step 5: Solve for x
    x = 46,161,574.78/7,816.25
  6. Step 6: Final answer
    x = 5,905.85

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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.