Home / 8,143.35-12,216.57-2,805.11

Finding the Fourth Proportional to 8,143.35, 12,216.57 and 2,805.11

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Solution

The fourth proportional to 8,143.35, 12,216.57 and 2,805.11 is: 4,208.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,143.35 : 12,216.57 = 2,805.11 : x
  2. Step 2: Convert to fraction form
    8,143.35/12,216.57 = 2,805.11/x
  3. Step 3: Cross multiply
    8,143.35x = 12,216.57 × 2,805.11
  4. Step 4: Simplify right side
    8,143.35x = 34,268,796.88
  5. Step 5: Solve for x
    x = 34,268,796.88/8,143.35
  6. Step 6: Final answer
    x = 4,208.20

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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.