Home / 4,086-5,638.59-2,317.80

Finding the Fourth Proportional to 4,086, 5,638.59 and 2,317.80

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Solution

The fourth proportional to 4,086, 5,638.59 and 2,317.80 is: 3,198.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,086 : 5,638.59 = 2,317.80 : x
  2. Step 2: Convert to fraction form
    4,086/5,638.59 = 2,317.80/x
  3. Step 3: Cross multiply
    4,086x = 5,638.59 × 2,317.80
  4. Step 4: Simplify right side
    4,086x = 13,069,123.90
  5. Step 5: Solve for x
    x = 13,069,123.90/4,086
  6. Step 6: Final answer
    x = 3,198.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.