Home / 1,682.80-2,529.60-1,553.20

Finding the Fourth Proportional to 1,682.80, 2,529.60 and 1,553.20

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Solution

The fourth proportional to 1,682.80, 2,529.60 and 1,553.20 is: 2,334.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,682.80 : 2,529.60 = 1,553.20 : x
  2. Step 2: Convert to fraction form
    1,682.80/2,529.60 = 1,553.20/x
  3. Step 3: Cross multiply
    1,682.80x = 2,529.60 × 1,553.20
  4. Step 4: Simplify right side
    1,682.80x = 3,928,974.72
  5. Step 5: Solve for x
    x = 3,928,974.72/1,682.80
  6. Step 6: Final answer
    x = 2,334.78

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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.