Home / 2,170.28-3,249.30-1,688.96

Finding the Fourth Proportional to 2,170.28, 3,249.30 and 1,688.96

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Solution

The fourth proportional to 2,170.28, 3,249.30 and 1,688.96 is: 2,528.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.28 : 3,249.30 = 1,688.96 : x
  2. Step 2: Convert to fraction form
    2,170.28/3,249.30 = 1,688.96/x
  3. Step 3: Cross multiply
    2,170.28x = 3,249.30 × 1,688.96
  4. Step 4: Simplify right side
    2,170.28x = 5,487,937.73
  5. Step 5: Solve for x
    x = 5,487,937.73/2,170.28
  6. Step 6: Final answer
    x = 2,528.68

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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.