Home / 3,779.36-5,215.81-2,101.31

Finding the Fourth Proportional to 3,779.36, 5,215.81 and 2,101.31

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Solution

The fourth proportional to 3,779.36, 5,215.81 and 2,101.31 is: 2,899.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779.36 : 5,215.81 = 2,101.31 : x
  2. Step 2: Convert to fraction form
    3,779.36/5,215.81 = 2,101.31/x
  3. Step 3: Cross multiply
    3,779.36x = 5,215.81 × 2,101.31
  4. Step 4: Simplify right side
    3,779.36x = 10,960,007.63
  5. Step 5: Solve for x
    x = 10,960,007.63/3,779.36
  6. Step 6: Final answer
    x = 2,899.97

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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.