Home / 5,279.38-7,919.10-1,383.75

Finding the Fourth Proportional to 5,279.38, 7,919.10 and 1,383.75

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Solution

The fourth proportional to 5,279.38, 7,919.10 and 1,383.75 is: 2,075.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.38 : 7,919.10 = 1,383.75 : x
  2. Step 2: Convert to fraction form
    5,279.38/7,919.10 = 1,383.75/x
  3. Step 3: Cross multiply
    5,279.38x = 7,919.10 × 1,383.75
  4. Step 4: Simplify right side
    5,279.38x = 10,958,054.63
  5. Step 5: Solve for x
    x = 10,958,054.63/5,279.38
  6. Step 6: Final answer
    x = 2,075.63

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1.5x scale

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.