Home / 3,638.60-5,459.70-2,079.80

Finding the Fourth Proportional to 3,638.60, 5,459.70 and 2,079.80

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Solution

The fourth proportional to 3,638.60, 5,459.70 and 2,079.80 is: 3,120.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.60 : 5,459.70 = 2,079.80 : x
  2. Step 2: Convert to fraction form
    3,638.60/5,459.70 = 2,079.80/x
  3. Step 3: Cross multiply
    3,638.60x = 5,459.70 × 2,079.80
  4. Step 4: Simplify right side
    3,638.60x = 11,355,084.06
  5. Step 5: Solve for x
    x = 11,355,084.06/3,638.60
  6. Step 6: Final answer
    x = 3,120.73

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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.