Home / 3,136.42-4,329.10-1,956.78

Finding the Fourth Proportional to 3,136.42, 4,329.10 and 1,956.78

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Solution

The fourth proportional to 3,136.42, 4,329.10 and 1,956.78 is: 2,700.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.42 : 4,329.10 = 1,956.78 : x
  2. Step 2: Convert to fraction form
    3,136.42/4,329.10 = 1,956.78/x
  3. Step 3: Cross multiply
    3,136.42x = 4,329.10 × 1,956.78
  4. Step 4: Simplify right side
    3,136.42x = 8,471,096.30
  5. Step 5: Solve for x
    x = 8,471,096.30/3,136.42
  6. Step 6: Final answer
    x = 2,700.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.