Home / 3,781.20-5,218.08-2,288.88

Finding the Fourth Proportional to 3,781.20, 5,218.08 and 2,288.88

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Solution

The fourth proportional to 3,781.20, 5,218.08 and 2,288.88 is: 3,158.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.20 : 5,218.08 = 2,288.88 : x
  2. Step 2: Convert to fraction form
    3,781.20/5,218.08 = 2,288.88/x
  3. Step 3: Cross multiply
    3,781.20x = 5,218.08 × 2,288.88
  4. Step 4: Simplify right side
    3,781.20x = 11,943,558.95
  5. Step 5: Solve for x
    x = 11,943,558.95/3,781.20
  6. Step 6: Final answer
    x = 3,158.67

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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.