Home / 3,639.80-5,459.70-3,236.60

Finding the Fourth Proportional to 3,639.80, 5,459.70 and 3,236.60

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Solution

The fourth proportional to 3,639.80, 5,459.70 and 3,236.60 is: 4,854.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.80 : 5,459.70 = 3,236.60 : x
  2. Step 2: Convert to fraction form
    3,639.80/5,459.70 = 3,236.60/x
  3. Step 3: Cross multiply
    3,639.80x = 5,459.70 × 3,236.60
  4. Step 4: Simplify right side
    3,639.80x = 17,670,865.02
  5. Step 5: Solve for x
    x = 17,670,865.02/3,639.80
  6. Step 6: Final answer
    x = 4,854.90

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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.