Home / 3,783.12-5,220.68-2,211.12

Finding the Fourth Proportional to 3,783.12, 5,220.68 and 2,211.12

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Solution

The fourth proportional to 3,783.12, 5,220.68 and 2,211.12 is: 3,051.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,783.12 : 5,220.68 = 2,211.12 : x
  2. Step 2: Convert to fraction form
    3,783.12/5,220.68 = 2,211.12/x
  3. Step 3: Cross multiply
    3,783.12x = 5,220.68 × 2,211.12
  4. Step 4: Simplify right side
    3,783.12x = 11,543,549.96
  5. Step 5: Solve for x
    x = 11,543,549.96/3,783.12
  6. Step 6: Final answer
    x = 3,051.33

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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.