Home / 3,578.38-4,940.01-2,779.91

Finding the Fourth Proportional to 3,578.38, 4,940.01 and 2,779.91

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Solution

The fourth proportional to 3,578.38, 4,940.01 and 2,779.91 is: 3,837.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.38 : 4,940.01 = 2,779.91 : x
  2. Step 2: Convert to fraction form
    3,578.38/4,940.01 = 2,779.91/x
  3. Step 3: Cross multiply
    3,578.38x = 4,940.01 × 2,779.91
  4. Step 4: Simplify right side
    3,578.38x = 13,732,783.20
  5. Step 5: Solve for x
    x = 13,732,783.20/3,578.38
  6. Step 6: Final answer
    x = 3,837.71

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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.