Home / 5,930.21-8,185.39-3,915.09

Finding the Fourth Proportional to 5,930.21, 8,185.39 and 3,915.09

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Solution

The fourth proportional to 5,930.21, 8,185.39 and 3,915.09 is: 5,403.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,930.21 : 8,185.39 = 3,915.09 : x
  2. Step 2: Convert to fraction form
    5,930.21/8,185.39 = 3,915.09/x
  3. Step 3: Cross multiply
    5,930.21x = 8,185.39 × 3,915.09
  4. Step 4: Simplify right side
    5,930.21x = 32,046,528.75
  5. Step 5: Solve for x
    x = 32,046,528.75/5,930.21
  6. Step 6: Final answer
    x = 5,403.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.