Home / 3,780.99-5,217.30-2,289.60

Finding the Fourth Proportional to 3,780.99, 5,217.30 and 2,289.60

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Solution

The fourth proportional to 3,780.99, 5,217.30 and 2,289.60 is: 3,159.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.99 : 5,217.30 = 2,289.60 : x
  2. Step 2: Convert to fraction form
    3,780.99/5,217.30 = 2,289.60/x
  3. Step 3: Cross multiply
    3,780.99x = 5,217.30 × 2,289.60
  4. Step 4: Simplify right side
    3,780.99x = 11,945,530.08
  5. Step 5: Solve for x
    x = 11,945,530.08/3,780.99
  6. Step 6: Final answer
    x = 3,159.37

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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.