Home / 4,257.80-6,386.70-1,791.80

Finding the Fourth Proportional to 4,257.80, 6,386.70 and 1,791.80

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Solution

The fourth proportional to 4,257.80, 6,386.70 and 1,791.80 is: 2,687.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,257.80 : 6,386.70 = 1,791.80 : x
  2. Step 2: Convert to fraction form
    4,257.80/6,386.70 = 1,791.80/x
  3. Step 3: Cross multiply
    4,257.80x = 6,386.70 × 1,791.80
  4. Step 4: Simplify right side
    4,257.80x = 11,443,689.06
  5. Step 5: Solve for x
    x = 11,443,689.06/4,257.80
  6. Step 6: Final answer
    x = 2,687.70

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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.