Home / 8,079.40-12,121.44-2,885.68

Finding the Fourth Proportional to 8,079.40, 12,121.44 and 2,885.68

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Solution

The fourth proportional to 8,079.40, 12,121.44 and 2,885.68 is: 4,329.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,079.40 : 12,121.44 = 2,885.68 : x
  2. Step 2: Convert to fraction form
    8,079.40/12,121.44 = 2,885.68/x
  3. Step 3: Cross multiply
    8,079.40x = 12,121.44 × 2,885.68
  4. Step 4: Simplify right side
    8,079.40x = 34,978,596.98
  5. Step 5: Solve for x
    x = 34,978,596.98/8,079.40
  6. Step 6: Final answer
    x = 4,329.36

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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.