Home / 8,231.21-12,345.57-2,684.55

Finding the Fourth Proportional to 8,231.21, 12,345.57 and 2,684.55

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Solution

The fourth proportional to 8,231.21, 12,345.57 and 2,684.55 is: 4,026.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,231.21 : 12,345.57 = 2,684.55 : x
  2. Step 2: Convert to fraction form
    8,231.21/12,345.57 = 2,684.55/x
  3. Step 3: Cross multiply
    8,231.21x = 12,345.57 × 2,684.55
  4. Step 4: Simplify right side
    8,231.21x = 33,142,278.87
  5. Step 5: Solve for x
    x = 33,142,278.87/8,231.21
  6. Step 6: Final answer
    x = 4,026.41

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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.