Home / 8,621.22-12,933.86-2,777.61

Finding the Fourth Proportional to 8,621.22, 12,933.86 and 2,777.61

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Solution

The fourth proportional to 8,621.22, 12,933.86 and 2,777.61 is: 4,167.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.22 : 12,933.86 = 2,777.61 : x
  2. Step 2: Convert to fraction form
    8,621.22/12,933.86 = 2,777.61/x
  3. Step 3: Cross multiply
    8,621.22x = 12,933.86 × 2,777.61
  4. Step 4: Simplify right side
    8,621.22x = 35,925,218.87
  5. Step 5: Solve for x
    x = 35,925,218.87/8,621.22
  6. Step 6: Final answer
    x = 4,167.07

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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.