Home / 2,170.40-3,255.35-610.56

Finding the Fourth Proportional to 2,170.40, 3,255.35 and 610.56

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Solution

The fourth proportional to 2,170.40, 3,255.35 and 610.56 is: 915.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.40 : 3,255.35 = 610.56 : x
  2. Step 2: Convert to fraction form
    2,170.40/3,255.35 = 610.56/x
  3. Step 3: Cross multiply
    2,170.40x = 3,255.35 × 610.56
  4. Step 4: Simplify right side
    2,170.40x = 1,987,583.44
  5. Step 5: Solve for x
    x = 1,987,583.44/2,170.40
  6. Step 6: Final answer
    x = 915.77

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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.