Home / 4,257.25-6,387.09-1,790.80

Finding the Fourth Proportional to 4,257.25, 6,387.09 and 1,790.80

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Solution

The fourth proportional to 4,257.25, 6,387.09 and 1,790.80 is: 2,686.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,257.25 : 6,387.09 = 1,790.80 : x
  2. Step 2: Convert to fraction form
    4,257.25/6,387.09 = 1,790.80/x
  3. Step 3: Cross multiply
    4,257.25x = 6,387.09 × 1,790.80
  4. Step 4: Simplify right side
    4,257.25x = 11,438,000.77
  5. Step 5: Solve for x
    x = 11,438,000.77/4,257.25
  6. Step 6: Final answer
    x = 2,686.71

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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.