Home / 6,621.09-9,136.85-3,636.78

Finding the Fourth Proportional to 6,621.09, 9,136.85 and 3,636.78

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Solution

The fourth proportional to 6,621.09, 9,136.85 and 3,636.78 is: 5,018.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.09 : 9,136.85 = 3,636.78 : x
  2. Step 2: Convert to fraction form
    6,621.09/9,136.85 = 3,636.78/x
  3. Step 3: Cross multiply
    6,621.09x = 9,136.85 × 3,636.78
  4. Step 4: Simplify right side
    6,621.09x = 33,228,695.16
  5. Step 5: Solve for x
    x = 33,228,695.16/6,621.09
  6. Step 6: Final answer
    x = 5,018.61

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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.