Home / 7,136.10-9,847.71-3,992.29

Finding the Fourth Proportional to 7,136.10, 9,847.71 and 3,992.29

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Solution

The fourth proportional to 7,136.10, 9,847.71 and 3,992.29 is: 5,509.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,136.10 : 9,847.71 = 3,992.29 : x
  2. Step 2: Convert to fraction form
    7,136.10/9,847.71 = 3,992.29/x
  3. Step 3: Cross multiply
    7,136.10x = 9,847.71 × 3,992.29
  4. Step 4: Simplify right side
    7,136.10x = 39,314,889.54
  5. Step 5: Solve for x
    x = 39,314,889.54/7,136.10
  6. Step 6: Final answer
    x = 5,509.30

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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.