Home / 7,816.09-10,786.20-4,279.30

Finding the Fourth Proportional to 7,816.09, 10,786.20 and 4,279.30

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Solution

The fourth proportional to 7,816.09, 10,786.20 and 4,279.30 is: 5,905.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,816.09 : 10,786.20 = 4,279.30 : x
  2. Step 2: Convert to fraction form
    7,816.09/10,786.20 = 4,279.30/x
  3. Step 3: Cross multiply
    7,816.09x = 10,786.20 × 4,279.30
  4. Step 4: Simplify right side
    7,816.09x = 46,157,358.69
  5. Step 5: Solve for x
    x = 46,157,358.69/7,816.09
  6. Step 6: Final answer
    x = 5,905.43

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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.