Home / 3,779.19-5,215.59-2,100.92

Finding the Fourth Proportional to 3,779.19, 5,215.59 and 2,100.92

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Solution

The fourth proportional to 3,779.19, 5,215.59 and 2,100.92 is: 2,899.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779.19 : 5,215.59 = 2,100.92 : x
  2. Step 2: Convert to fraction form
    3,779.19/5,215.59 = 2,100.92/x
  3. Step 3: Cross multiply
    3,779.19x = 5,215.59 × 2,100.92
  4. Step 4: Simplify right side
    3,779.19x = 10,957,511.26
  5. Step 5: Solve for x
    x = 10,957,511.26/3,779.19
  6. Step 6: Final answer
    x = 2,899.43

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Half scale
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Double scale
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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.