Home / 3,824.90-5,280.90-2,939.12

Finding the Fourth Proportional to 3,824.90, 5,280.90 and 2,939.12

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Solution

The fourth proportional to 3,824.90, 5,280.90 and 2,939.12 is: 4,057.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,824.90 : 5,280.90 = 2,939.12 : x
  2. Step 2: Convert to fraction form
    3,824.90/5,280.90 = 2,939.12/x
  3. Step 3: Cross multiply
    3,824.90x = 5,280.90 × 2,939.12
  4. Step 4: Simplify right side
    3,824.90x = 15,521,198.81
  5. Step 5: Solve for x
    x = 15,521,198.81/3,824.90
  6. Step 6: Final answer
    x = 4,057.94

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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.