Home / 8,617.36-12,915.60-3,930.95

Finding the Fourth Proportional to 8,617.36, 12,915.60 and 3,930.95

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Solution

The fourth proportional to 8,617.36, 12,915.60 and 3,930.95 is: 5,891.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,617.36 : 12,915.60 = 3,930.95 : x
  2. Step 2: Convert to fraction form
    8,617.36/12,915.60 = 3,930.95/x
  3. Step 3: Cross multiply
    8,617.36x = 12,915.60 × 3,930.95
  4. Step 4: Simplify right side
    8,617.36x = 50,770,577.82
  5. Step 5: Solve for x
    x = 50,770,577.82/8,617.36
  6. Step 6: Final answer
    x = 5,891.66

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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.