Home / 3,211.40-4,817.10-2,174.60

Finding the Fourth Proportional to 3,211.40, 4,817.10 and 2,174.60

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Solution

The fourth proportional to 3,211.40, 4,817.10 and 2,174.60 is: 3,261.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.40 : 4,817.10 = 2,174.60 : x
  2. Step 2: Convert to fraction form
    3,211.40/4,817.10 = 2,174.60/x
  3. Step 3: Cross multiply
    3,211.40x = 4,817.10 × 2,174.60
  4. Step 4: Simplify right side
    3,211.40x = 10,475,265.66
  5. Step 5: Solve for x
    x = 10,475,265.66/3,211.40
  6. Step 6: Final answer
    x = 3,261.90

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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.