Home / 5,425.85-8,140.40-3,847.61

Finding the Fourth Proportional to 5,425.85, 8,140.40 and 3,847.61

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Solution

The fourth proportional to 5,425.85, 8,140.40 and 3,847.61 is: 5,772.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,425.85 : 8,140.40 = 3,847.61 : x
  2. Step 2: Convert to fraction form
    5,425.85/8,140.40 = 3,847.61/x
  3. Step 3: Cross multiply
    5,425.85x = 8,140.40 × 3,847.61
  4. Step 4: Simplify right side
    5,425.85x = 31,321,084.44
  5. Step 5: Solve for x
    x = 31,321,084.44/5,425.85
  6. Step 6: Final answer
    x = 5,772.57

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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.