Home / 3,639.60-5,459.40-1,999.35

Finding the Fourth Proportional to 3,639.60, 5,459.40 and 1,999.35

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Solution

The fourth proportional to 3,639.60, 5,459.40 and 1,999.35 is: 2,999.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.60 : 5,459.40 = 1,999.35 : x
  2. Step 2: Convert to fraction form
    3,639.60/5,459.40 = 1,999.35/x
  3. Step 3: Cross multiply
    3,639.60x = 5,459.40 × 1,999.35
  4. Step 4: Simplify right side
    3,639.60x = 10,915,251.39
  5. Step 5: Solve for x
    x = 10,915,251.39/3,639.60
  6. Step 6: Final answer
    x = 2,999.03

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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.