Home / 3,779.90-5,211.26-3,105.18

Finding the Fourth Proportional to 3,779.90, 5,211.26 and 3,105.18

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Solution

The fourth proportional to 3,779.90, 5,211.26 and 3,105.18 is: 4,281.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779.90 : 5,211.26 = 3,105.18 : x
  2. Step 2: Convert to fraction form
    3,779.90/5,211.26 = 3,105.18/x
  3. Step 3: Cross multiply
    3,779.90x = 5,211.26 × 3,105.18
  4. Step 4: Simplify right side
    3,779.90x = 16,181,900.33
  5. Step 5: Solve for x
    x = 16,181,900.33/3,779.90
  6. Step 6: Final answer
    x = 4,281.04

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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.