Home / 8,517.22-12,777.90-2,970.61

Finding the Fourth Proportional to 8,517.22, 12,777.90 and 2,970.61

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Solution

The fourth proportional to 8,517.22, 12,777.90 and 2,970.61 is: 4,456.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,517.22 : 12,777.90 = 2,970.61 : x
  2. Step 2: Convert to fraction form
    8,517.22/12,777.90 = 2,970.61/x
  3. Step 3: Cross multiply
    8,517.22x = 12,777.90 × 2,970.61
  4. Step 4: Simplify right side
    8,517.22x = 37,958,093.63
  5. Step 5: Solve for x
    x = 37,958,093.63/8,517.22
  6. Step 6: Final answer
    x = 4,456.63

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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.