Home / 2,136.28-3,198.18-1,931.32

Finding the Fourth Proportional to 2,136.28, 3,198.18 and 1,931.32

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Solution

The fourth proportional to 2,136.28, 3,198.18 and 1,931.32 is: 2,891.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136.28 : 3,198.18 = 1,931.32 : x
  2. Step 2: Convert to fraction form
    2,136.28/3,198.18 = 1,931.32/x
  3. Step 3: Cross multiply
    2,136.28x = 3,198.18 × 1,931.32
  4. Step 4: Simplify right side
    2,136.28x = 6,176,709.00
  5. Step 5: Solve for x
    x = 6,176,709.00/2,136.28
  6. Step 6: Final answer
    x = 2,891.34

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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.