Home / 3,780.68-5,217.60-2,209.28

Finding the Fourth Proportional to 3,780.68, 5,217.60 and 2,209.28

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Solution

The fourth proportional to 3,780.68, 5,217.60 and 2,209.28 is: 3,048.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.68 : 5,217.60 = 2,209.28 : x
  2. Step 2: Convert to fraction form
    3,780.68/5,217.60 = 2,209.28/x
  3. Step 3: Cross multiply
    3,780.68x = 5,217.60 × 2,209.28
  4. Step 4: Simplify right side
    3,780.68x = 11,527,139.33
  5. Step 5: Solve for x
    x = 11,527,139.33/3,780.68
  6. Step 6: Final answer
    x = 3,048.96

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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.