Home / 3,934.30-5,428.68-2,609.80

Finding the Fourth Proportional to 3,934.30, 5,428.68 and 2,609.80

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Solution

The fourth proportional to 3,934.30, 5,428.68 and 2,609.80 is: 3,601.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934.30 : 5,428.68 = 2,609.80 : x
  2. Step 2: Convert to fraction form
    3,934.30/5,428.68 = 2,609.80/x
  3. Step 3: Cross multiply
    3,934.30x = 5,428.68 × 2,609.80
  4. Step 4: Simplify right side
    3,934.30x = 14,167,769.06
  5. Step 5: Solve for x
    x = 14,167,769.06/3,934.30
  6. Step 6: Final answer
    x = 3,601.09

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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.