Home / 5,279.58-7,919.35-1,581.81

Finding the Fourth Proportional to 5,279.58, 7,919.35 and 1,581.81

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Solution

The fourth proportional to 5,279.58, 7,919.35 and 1,581.81 is: 2,372.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.58 : 7,919.35 = 1,581.81 : x
  2. Step 2: Convert to fraction form
    5,279.58/7,919.35 = 1,581.81/x
  3. Step 3: Cross multiply
    5,279.58x = 7,919.35 × 1,581.81
  4. Step 4: Simplify right side
    5,279.58x = 12,526,907.02
  5. Step 5: Solve for x
    x = 12,526,907.02/5,279.58
  6. Step 6: Final answer
    x = 2,372.71

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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.