Home / 2,157.31-3,234.21-675.77

Finding the Fourth Proportional to 2,157.31, 3,234.21 and 675.77

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Solution

The fourth proportional to 2,157.31, 3,234.21 and 675.77 is: 1,013.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157.31 : 3,234.21 = 675.77 : x
  2. Step 2: Convert to fraction form
    2,157.31/3,234.21 = 675.77/x
  3. Step 3: Cross multiply
    2,157.31x = 3,234.21 × 675.77
  4. Step 4: Simplify right side
    2,157.31x = 2,185,589.93
  5. Step 5: Solve for x
    x = 2,185,589.93/2,157.31
  6. Step 6: Final answer
    x = 1,013.11

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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.