Home / 4,139.40-6,213.90-2,190.60

Finding the Fourth Proportional to 4,139.40, 6,213.90 and 2,190.60

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Solution

The fourth proportional to 4,139.40, 6,213.90 and 2,190.60 is: 3,288.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,139.40 : 6,213.90 = 2,190.60 : x
  2. Step 2: Convert to fraction form
    4,139.40/6,213.90 = 2,190.60/x
  3. Step 3: Cross multiply
    4,139.40x = 6,213.90 × 2,190.60
  4. Step 4: Simplify right side
    4,139.40x = 13,612,169.34
  5. Step 5: Solve for x
    x = 13,612,169.34/4,139.40
  6. Step 6: Final answer
    x = 3,288.44

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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.