Home / 3,180.70-4,770.96-1,425.29

Finding the Fourth Proportional to 3,180.70, 4,770.96 and 1,425.29

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Solution

The fourth proportional to 3,180.70, 4,770.96 and 1,425.29 is: 2,137.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.70 : 4,770.96 = 1,425.29 : x
  2. Step 2: Convert to fraction form
    3,180.70/4,770.96 = 1,425.29/x
  3. Step 3: Cross multiply
    3,180.70x = 4,770.96 × 1,425.29
  4. Step 4: Simplify right side
    3,180.70x = 6,800,001.58
  5. Step 5: Solve for x
    x = 6,800,001.58/3,180.70
  6. Step 6: Final answer
    x = 2,137.89

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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.