Home / 8,324.46-12,486.78-2,778.12

Finding the Fourth Proportional to 8,324.46, 12,486.78 and 2,778.12

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Solution

The fourth proportional to 8,324.46, 12,486.78 and 2,778.12 is: 4,167.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,324.46 : 12,486.78 = 2,778.12 : x
  2. Step 2: Convert to fraction form
    8,324.46/12,486.78 = 2,778.12/x
  3. Step 3: Cross multiply
    8,324.46x = 12,486.78 × 2,778.12
  4. Step 4: Simplify right side
    8,324.46x = 34,689,773.25
  5. Step 5: Solve for x
    x = 34,689,773.25/8,324.46
  6. Step 6: Final answer
    x = 4,167.21

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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.