Home / 8,084.40-12,128.24-2,890.14

Finding the Fourth Proportional to 8,084.40, 12,128.24 and 2,890.14

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Solution

The fourth proportional to 8,084.40, 12,128.24 and 2,890.14 is: 4,335.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,084.40 : 12,128.24 = 2,890.14 : x
  2. Step 2: Convert to fraction form
    8,084.40/12,128.24 = 2,890.14/x
  3. Step 3: Cross multiply
    8,084.40x = 12,128.24 × 2,890.14
  4. Step 4: Simplify right side
    8,084.40x = 35,052,311.55
  5. Step 5: Solve for x
    x = 35,052,311.55/8,084.40
  6. Step 6: Final answer
    x = 4,335.80

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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.