Home / 3,839.86-5,299.02-2,161.36

Finding the Fourth Proportional to 3,839.86, 5,299.02 and 2,161.36

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Solution

The fourth proportional to 3,839.86, 5,299.02 and 2,161.36 is: 2,982.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,839.86 : 5,299.02 = 2,161.36 : x
  2. Step 2: Convert to fraction form
    3,839.86/5,299.02 = 2,161.36/x
  3. Step 3: Cross multiply
    3,839.86x = 5,299.02 × 2,161.36
  4. Step 4: Simplify right side
    3,839.86x = 11,453,089.87
  5. Step 5: Solve for x
    x = 11,453,089.87/3,839.86
  6. Step 6: Final answer
    x = 2,982.68

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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.