Home / 3,172.70-4,759.05-2,135.90

Finding the Fourth Proportional to 3,172.70, 4,759.05 and 2,135.90

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Solution

The fourth proportional to 3,172.70, 4,759.05 and 2,135.90 is: 3,203.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.70 : 4,759.05 = 2,135.90 : x
  2. Step 2: Convert to fraction form
    3,172.70/4,759.05 = 2,135.90/x
  3. Step 3: Cross multiply
    3,172.70x = 4,759.05 × 2,135.90
  4. Step 4: Simplify right side
    3,172.70x = 10,164,854.90
  5. Step 5: Solve for x
    x = 10,164,854.90/3,172.70
  6. Step 6: Final answer
    x = 3,203.85

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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.