Home / 3,620.79-5,431.10-1,540.26

Finding the Fourth Proportional to 3,620.79, 5,431.10 and 1,540.26

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Solution

The fourth proportional to 3,620.79, 5,431.10 and 1,540.26 is: 2,310.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.79 : 5,431.10 = 1,540.26 : x
  2. Step 2: Convert to fraction form
    3,620.79/5,431.10 = 1,540.26/x
  3. Step 3: Cross multiply
    3,620.79x = 5,431.10 × 1,540.26
  4. Step 4: Simplify right side
    3,620.79x = 8,365,298.38
  5. Step 5: Solve for x
    x = 8,365,298.38/3,620.79
  6. Step 6: Final answer
    x = 2,310.35

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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.