Home / 4,084.09-5,639.22-3,138.38

Finding the Fourth Proportional to 4,084.09, 5,639.22 and 3,138.38

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Solution

The fourth proportional to 4,084.09, 5,639.22 and 3,138.38 is: 4,333.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,084.09 : 5,639.22 = 3,138.38 : x
  2. Step 2: Convert to fraction form
    4,084.09/5,639.22 = 3,138.38/x
  3. Step 3: Cross multiply
    4,084.09x = 5,639.22 × 3,138.38
  4. Step 4: Simplify right side
    4,084.09x = 17,697,999.57
  5. Step 5: Solve for x
    x = 17,697,999.57/4,084.09
  6. Step 6: Final answer
    x = 4,333.41

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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.