Home / 4,128.12-6,186.78-3,578.04

Finding the Fourth Proportional to 4,128.12, 6,186.78 and 3,578.04

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Solution

The fourth proportional to 4,128.12, 6,186.78 and 3,578.04 is: 5,362.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128.12 : 6,186.78 = 3,578.04 : x
  2. Step 2: Convert to fraction form
    4,128.12/6,186.78 = 3,578.04/x
  3. Step 3: Cross multiply
    4,128.12x = 6,186.78 × 3,578.04
  4. Step 4: Simplify right side
    4,128.12x = 22,136,546.31
  5. Step 5: Solve for x
    x = 22,136,546.31/4,128.12
  6. Step 6: Final answer
    x = 5,362.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.