Home / 3,431.88-5,143.68-1,580.46

Finding the Fourth Proportional to 3,431.88, 5,143.68 and 1,580.46

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Solution

The fourth proportional to 3,431.88, 5,143.68 and 1,580.46 is: 2,368.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.88 : 5,143.68 = 1,580.46 : x
  2. Step 2: Convert to fraction form
    3,431.88/5,143.68 = 1,580.46/x
  3. Step 3: Cross multiply
    3,431.88x = 5,143.68 × 1,580.46
  4. Step 4: Simplify right side
    3,431.88x = 8,129,380.49
  5. Step 5: Solve for x
    x = 8,129,380.49/3,431.88
  6. Step 6: Final answer
    x = 2,368.78

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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.