Home / 8,518.57-12,778.36-2,278.73

Finding the Fourth Proportional to 8,518.57, 12,778.36 and 2,278.73

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Solution

The fourth proportional to 8,518.57, 12,778.36 and 2,278.73 is: 3,418.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,518.57 : 12,778.36 = 2,278.73 : x
  2. Step 2: Convert to fraction form
    8,518.57/12,778.36 = 2,278.73/x
  3. Step 3: Cross multiply
    8,518.57x = 12,778.36 × 2,278.73
  4. Step 4: Simplify right side
    8,518.57x = 29,118,458.53
  5. Step 5: Solve for x
    x = 29,118,458.53/8,518.57
  6. Step 6: Final answer
    x = 3,418.23

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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.