Home / 5,321.21-7,986.73-2,690.56

Finding the Fourth Proportional to 5,321.21, 7,986.73 and 2,690.56

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Solution

The fourth proportional to 5,321.21, 7,986.73 and 2,690.56 is: 4,038.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,321.21 : 7,986.73 = 2,690.56 : x
  2. Step 2: Convert to fraction form
    5,321.21/7,986.73 = 2,690.56/x
  3. Step 3: Cross multiply
    5,321.21x = 7,986.73 × 2,690.56
  4. Step 4: Simplify right side
    5,321.21x = 21,488,776.27
  5. Step 5: Solve for x
    x = 21,488,776.27/5,321.21
  6. Step 6: Final answer
    x = 4,038.33

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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.