Home / 3,779.44-5,215.32-2,100.64

Finding the Fourth Proportional to 3,779.44, 5,215.32 and 2,100.64

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Solution

The fourth proportional to 3,779.44, 5,215.32 and 2,100.64 is: 2,898.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779.44 : 5,215.32 = 2,100.64 : x
  2. Step 2: Convert to fraction form
    3,779.44/5,215.32 = 2,100.64/x
  3. Step 3: Cross multiply
    3,779.44x = 5,215.32 × 2,100.64
  4. Step 4: Simplify right side
    3,779.44x = 10,955,509.80
  5. Step 5: Solve for x
    x = 10,955,509.80/3,779.44
  6. Step 6: Final answer
    x = 2,898.71

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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.