Home / 3,622.40-5,433.60-2,391.20

Finding the Fourth Proportional to 3,622.40, 5,433.60 and 2,391.20

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Solution

The fourth proportional to 3,622.40, 5,433.60 and 2,391.20 is: 3,586.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,622.40 : 5,433.60 = 2,391.20 : x
  2. Step 2: Convert to fraction form
    3,622.40/5,433.60 = 2,391.20/x
  3. Step 3: Cross multiply
    3,622.40x = 5,433.60 × 2,391.20
  4. Step 4: Simplify right side
    3,622.40x = 12,992,824.32
  5. Step 5: Solve for x
    x = 12,992,824.32/3,622.40
  6. Step 6: Final answer
    x = 3,586.80

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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.