Home / 3,747.40-5,629.20-3,609.70

Finding the Fourth Proportional to 3,747.40, 5,629.20 and 3,609.70

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Solution

The fourth proportional to 3,747.40, 5,629.20 and 3,609.70 is: 5,422.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,747.40 : 5,629.20 = 3,609.70 : x
  2. Step 2: Convert to fraction form
    3,747.40/5,629.20 = 3,609.70/x
  3. Step 3: Cross multiply
    3,747.40x = 5,629.20 × 3,609.70
  4. Step 4: Simplify right side
    3,747.40x = 20,319,723.24
  5. Step 5: Solve for x
    x = 20,319,723.24/3,747.40
  6. Step 6: Final answer
    x = 5,422.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.