Home / 3,211.50-4,817.25-2,101.85

Finding the Fourth Proportional to 3,211.50, 4,817.25 and 2,101.85

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Solution

The fourth proportional to 3,211.50, 4,817.25 and 2,101.85 is: 3,152.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.50 : 4,817.25 = 2,101.85 : x
  2. Step 2: Convert to fraction form
    3,211.50/4,817.25 = 2,101.85/x
  3. Step 3: Cross multiply
    3,211.50x = 4,817.25 × 2,101.85
  4. Step 4: Simplify right side
    3,211.50x = 10,125,126.40
  5. Step 5: Solve for x
    x = 10,125,126.40/3,211.50
  6. Step 6: Final answer
    x = 3,152.78

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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.