Home / 4,086.40-6,136.80-3,164.20

Finding the Fourth Proportional to 4,086.40, 6,136.80 and 3,164.20

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Solution

The fourth proportional to 4,086.40, 6,136.80 and 3,164.20 is: 4,751.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,086.40 : 6,136.80 = 3,164.20 : x
  2. Step 2: Convert to fraction form
    4,086.40/6,136.80 = 3,164.20/x
  3. Step 3: Cross multiply
    4,086.40x = 6,136.80 × 3,164.20
  4. Step 4: Simplify right side
    4,086.40x = 19,418,062.56
  5. Step 5: Solve for x
    x = 19,418,062.56/4,086.40
  6. Step 6: Final answer
    x = 4,751.88

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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.