Home / 3,961.60-5,938.29-1,620.60

Finding the Fourth Proportional to 3,961.60, 5,938.29 and 1,620.60

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Solution

The fourth proportional to 3,961.60, 5,938.29 and 1,620.60 is: 2,429.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,961.60 : 5,938.29 = 1,620.60 : x
  2. Step 2: Convert to fraction form
    3,961.60/5,938.29 = 1,620.60/x
  3. Step 3: Cross multiply
    3,961.60x = 5,938.29 × 1,620.60
  4. Step 4: Simplify right side
    3,961.60x = 9,623,592.77
  5. Step 5: Solve for x
    x = 9,623,592.77/3,961.60
  6. Step 6: Final answer
    x = 2,429.22

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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.