Home / 8,215.54-12,314.42-3,279.75

Finding the Fourth Proportional to 8,215.54, 12,314.42 and 3,279.75

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Solution

The fourth proportional to 8,215.54, 12,314.42 and 3,279.75 is: 4,916.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215.54 : 12,314.42 = 3,279.75 : x
  2. Step 2: Convert to fraction form
    8,215.54/12,314.42 = 3,279.75/x
  3. Step 3: Cross multiply
    8,215.54x = 12,314.42 × 3,279.75
  4. Step 4: Simplify right side
    8,215.54x = 40,388,249.78
  5. Step 5: Solve for x
    x = 40,388,249.78/8,215.54
  6. Step 6: Final answer
    x = 4,916.08

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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.