Home / 7,136.20-9,847.74-3,949.72

Finding the Fourth Proportional to 7,136.20, 9,847.74 and 3,949.72

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Solution

The fourth proportional to 7,136.20, 9,847.74 and 3,949.72 is: 5,450.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,136.20 : 9,847.74 = 3,949.72 : x
  2. Step 2: Convert to fraction form
    7,136.20/9,847.74 = 3,949.72/x
  3. Step 3: Cross multiply
    7,136.20x = 9,847.74 × 3,949.72
  4. Step 4: Simplify right side
    7,136.20x = 38,895,815.63
  5. Step 5: Solve for x
    x = 38,895,815.63/7,136.20
  6. Step 6: Final answer
    x = 5,450.49

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1.5x scale

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.