Home / 3,136.30-4,700.85-1,286.20

Finding the Fourth Proportional to 3,136.30, 4,700.85 and 1,286.20

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Solution

The fourth proportional to 3,136.30, 4,700.85 and 1,286.20 is: 1,927.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.30 : 4,700.85 = 1,286.20 : x
  2. Step 2: Convert to fraction form
    3,136.30/4,700.85 = 1,286.20/x
  3. Step 3: Cross multiply
    3,136.30x = 4,700.85 × 1,286.20
  4. Step 4: Simplify right side
    3,136.30x = 6,046,233.27
  5. Step 5: Solve for x
    x = 6,046,233.27/3,136.30
  6. Step 6: Final answer
    x = 1,927.82

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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.