Home / 8,120.58-12,172.59-3,735.60

Finding the Fourth Proportional to 8,120.58, 12,172.59 and 3,735.60

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Solution

The fourth proportional to 8,120.58, 12,172.59 and 3,735.60 is: 5,599.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.58 : 12,172.59 = 3,735.60 : x
  2. Step 2: Convert to fraction form
    8,120.58/12,172.59 = 3,735.60/x
  3. Step 3: Cross multiply
    8,120.58x = 12,172.59 × 3,735.60
  4. Step 4: Simplify right side
    8,120.58x = 45,471,927.20
  5. Step 5: Solve for x
    x = 45,471,927.20/8,120.58
  6. Step 6: Final answer
    x = 5,599.59

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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.