Home / 5,125.45-7,687.77-1,838.20

Finding the Fourth Proportional to 5,125.45, 7,687.77 and 1,838.20

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Solution

The fourth proportional to 5,125.45, 7,687.77 and 1,838.20 is: 2,757.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.45 : 7,687.77 = 1,838.20 : x
  2. Step 2: Convert to fraction form
    5,125.45/7,687.77 = 1,838.20/x
  3. Step 3: Cross multiply
    5,125.45x = 7,687.77 × 1,838.20
  4. Step 4: Simplify right side
    5,125.45x = 14,131,658.81
  5. Step 5: Solve for x
    x = 14,131,658.81/5,125.45
  6. Step 6: Final answer
    x = 2,757.15

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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.