Home / 5,687.90-8,520.45-2,757.30

Finding the Fourth Proportional to 5,687.90, 8,520.45 and 2,757.30

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Solution

The fourth proportional to 5,687.90, 8,520.45 and 2,757.30 is: 4,130.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,687.90 : 8,520.45 = 2,757.30 : x
  2. Step 2: Convert to fraction form
    5,687.90/8,520.45 = 2,757.30/x
  3. Step 3: Cross multiply
    5,687.90x = 8,520.45 × 2,757.30
  4. Step 4: Simplify right side
    5,687.90x = 23,493,436.79
  5. Step 5: Solve for x
    x = 23,493,436.79/5,687.90
  6. Step 6: Final answer
    x = 4,130.42

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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.