Home / 7,136.07-9,847.80-3,949.59

Finding the Fourth Proportional to 7,136.07, 9,847.80 and 3,949.59

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Solution

The fourth proportional to 7,136.07, 9,847.80 and 3,949.59 is: 5,450.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,136.07 : 9,847.80 = 3,949.59 : x
  2. Step 2: Convert to fraction form
    7,136.07/9,847.80 = 3,949.59/x
  3. Step 3: Cross multiply
    7,136.07x = 9,847.80 × 3,949.59
  4. Step 4: Simplify right side
    7,136.07x = 38,894,753.94
  5. Step 5: Solve for x
    x = 38,894,753.94/7,136.07
  6. Step 6: Final answer
    x = 5,450.44

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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.