Home / 2,170.18-3,257.09-938.53

Finding the Fourth Proportional to 2,170.18, 3,257.09 and 938.53

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Solution

The fourth proportional to 2,170.18, 3,257.09 and 938.53 is: 1,408.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.18 : 3,257.09 = 938.53 : x
  2. Step 2: Convert to fraction form
    2,170.18/3,257.09 = 938.53/x
  3. Step 3: Cross multiply
    2,170.18x = 3,257.09 × 938.53
  4. Step 4: Simplify right side
    2,170.18x = 3,056,876.68
  5. Step 5: Solve for x
    x = 3,056,876.68/2,170.18
  6. Step 6: Final answer
    x = 1,408.58

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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.