Home / 3,772.12-5,205.72-2,839

Finding the Fourth Proportional to 3,772.12, 5,205.72 and 2,839

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Solution

The fourth proportional to 3,772.12, 5,205.72 and 2,839 is: 3,917.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,772.12 : 5,205.72 = 2,839 : x
  2. Step 2: Convert to fraction form
    3,772.12/5,205.72 = 2,839/x
  3. Step 3: Cross multiply
    3,772.12x = 5,205.72 × 2,839
  4. Step 4: Simplify right side
    3,772.12x = 14,779,039.08
  5. Step 5: Solve for x
    x = 14,779,039.08/3,772.12
  6. Step 6: Final answer
    x = 3,917.97

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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.