Home / 3,609.80-5,390.61-3,425.28

Finding the Fourth Proportional to 3,609.80, 5,390.61 and 3,425.28

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Solution

The fourth proportional to 3,609.80, 5,390.61 and 3,425.28 is: 5,115.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.80 : 5,390.61 = 3,425.28 : x
  2. Step 2: Convert to fraction form
    3,609.80/5,390.61 = 3,425.28/x
  3. Step 3: Cross multiply
    3,609.80x = 5,390.61 × 3,425.28
  4. Step 4: Simplify right side
    3,609.80x = 18,464,348.62
  5. Step 5: Solve for x
    x = 18,464,348.62/3,609.80
  6. Step 6: Final answer
    x = 5,115.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.