Home / 3,168.76-4,755.30-1,438.60

Finding the Fourth Proportional to 3,168.76, 4,755.30 and 1,438.60

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Solution

The fourth proportional to 3,168.76, 4,755.30 and 1,438.60 is: 2,158.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,168.76 : 4,755.30 = 1,438.60 : x
  2. Step 2: Convert to fraction form
    3,168.76/4,755.30 = 1,438.60/x
  3. Step 3: Cross multiply
    3,168.76x = 4,755.30 × 1,438.60
  4. Step 4: Simplify right side
    3,168.76x = 6,840,974.58
  5. Step 5: Solve for x
    x = 6,840,974.58/3,168.76
  6. Step 6: Final answer
    x = 2,158.88

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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.