Home / 3,230.50-4,846.56-1,380.70

Finding the Fourth Proportional to 3,230.50, 4,846.56 and 1,380.70

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Solution

The fourth proportional to 3,230.50, 4,846.56 and 1,380.70 is: 2,071.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,230.50 : 4,846.56 = 1,380.70 : x
  2. Step 2: Convert to fraction form
    3,230.50/4,846.56 = 1,380.70/x
  3. Step 3: Cross multiply
    3,230.50x = 4,846.56 × 1,380.70
  4. Step 4: Simplify right side
    3,230.50x = 6,691,645.39
  5. Step 5: Solve for x
    x = 6,691,645.39/3,230.50
  6. Step 6: Final answer
    x = 2,071.40

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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.