Home / 3,783.90-5,219.82-2,211.08

Finding the Fourth Proportional to 3,783.90, 5,219.82 and 2,211.08

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Solution

The fourth proportional to 3,783.90, 5,219.82 and 2,211.08 is: 3,050.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,783.90 : 5,219.82 = 2,211.08 : x
  2. Step 2: Convert to fraction form
    3,783.90/5,219.82 = 2,211.08/x
  3. Step 3: Cross multiply
    3,783.90x = 5,219.82 × 2,211.08
  4. Step 4: Simplify right side
    3,783.90x = 11,541,452.66
  5. Step 5: Solve for x
    x = 11,541,452.66/3,783.90
  6. Step 6: Final answer
    x = 3,050.15

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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.