Home / 8,184.32-12,278.38-2,561.68

Finding the Fourth Proportional to 8,184.32, 12,278.38 and 2,561.68

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Solution

The fourth proportional to 8,184.32, 12,278.38 and 2,561.68 is: 3,843.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,184.32 : 12,278.38 = 2,561.68 : x
  2. Step 2: Convert to fraction form
    8,184.32/12,278.38 = 2,561.68/x
  3. Step 3: Cross multiply
    8,184.32x = 12,278.38 × 2,561.68
  4. Step 4: Simplify right side
    8,184.32x = 31,453,217.95
  5. Step 5: Solve for x
    x = 31,453,217.95/8,184.32
  6. Step 6: Final answer
    x = 3,843.11

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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.