Home / 3,383.28-4,668.90-1,891.20

Finding the Fourth Proportional to 3,383.28, 4,668.90 and 1,891.20

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Solution

The fourth proportional to 3,383.28, 4,668.90 and 1,891.20 is: 2,609.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,383.28 : 4,668.90 = 1,891.20 : x
  2. Step 2: Convert to fraction form
    3,383.28/4,668.90 = 1,891.20/x
  3. Step 3: Cross multiply
    3,383.28x = 4,668.90 × 1,891.20
  4. Step 4: Simplify right side
    3,383.28x = 8,829,823.68
  5. Step 5: Solve for x
    x = 8,829,823.68/3,383.28
  6. Step 6: Final answer
    x = 2,609.84

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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.