Home / 3,630.28-5,447.42-2,172.20

Finding the Fourth Proportional to 3,630.28, 5,447.42 and 2,172.20

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Solution

The fourth proportional to 3,630.28, 5,447.42 and 2,172.20 is: 3,259.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,630.28 : 5,447.42 = 2,172.20 : x
  2. Step 2: Convert to fraction form
    3,630.28/5,447.42 = 2,172.20/x
  3. Step 3: Cross multiply
    3,630.28x = 5,447.42 × 2,172.20
  4. Step 4: Simplify right side
    3,630.28x = 11,832,885.72
  5. Step 5: Solve for x
    x = 11,832,885.72/3,630.28
  6. Step 6: Final answer
    x = 3,259.50

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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.