Home / 3,811.50-5,259.87-2,240.51

Finding the Fourth Proportional to 3,811.50, 5,259.87 and 2,240.51

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Solution

The fourth proportional to 3,811.50, 5,259.87 and 2,240.51 is: 3,091.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.50 : 5,259.87 = 2,240.51 : x
  2. Step 2: Convert to fraction form
    3,811.50/5,259.87 = 2,240.51/x
  3. Step 3: Cross multiply
    3,811.50x = 5,259.87 × 2,240.51
  4. Step 4: Simplify right side
    3,811.50x = 11,784,765.03
  5. Step 5: Solve for x
    x = 11,784,765.03/3,811.50
  6. Step 6: Final answer
    x = 3,091.90

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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.