Home / 5,519.80-8,279.69-1,359.88

Finding the Fourth Proportional to 5,519.80, 8,279.69 and 1,359.88

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Solution

The fourth proportional to 5,519.80, 8,279.69 and 1,359.88 is: 2,039.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,519.80 : 8,279.69 = 1,359.88 : x
  2. Step 2: Convert to fraction form
    5,519.80/8,279.69 = 1,359.88/x
  3. Step 3: Cross multiply
    5,519.80x = 8,279.69 × 1,359.88
  4. Step 4: Simplify right side
    5,519.80x = 11,259,384.84
  5. Step 5: Solve for x
    x = 11,259,384.84/5,519.80
  6. Step 6: Final answer
    x = 2,039.82

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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.