Home / 8,531.80-12,800.88-3,850.42

Finding the Fourth Proportional to 8,531.80, 12,800.88 and 3,850.42

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Solution

The fourth proportional to 8,531.80, 12,800.88 and 3,850.42 is: 5,777.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,531.80 : 12,800.88 = 3,850.42 : x
  2. Step 2: Convert to fraction form
    8,531.80/12,800.88 = 3,850.42/x
  3. Step 3: Cross multiply
    8,531.80x = 12,800.88 × 3,850.42
  4. Step 4: Simplify right side
    8,531.80x = 49,288,764.37
  5. Step 5: Solve for x
    x = 49,288,764.37/8,531.80
  6. Step 6: Final answer
    x = 5,777.07

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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.