Home / 5,115.64-7,658.46-3,887.94

Finding the Fourth Proportional to 5,115.64, 7,658.46 and 3,887.94

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Solution

The fourth proportional to 5,115.64, 7,658.46 and 3,887.94 is: 5,820.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.64 : 7,658.46 = 3,887.94 : x
  2. Step 2: Convert to fraction form
    5,115.64/7,658.46 = 3,887.94/x
  3. Step 3: Cross multiply
    5,115.64x = 7,658.46 × 3,887.94
  4. Step 4: Simplify right side
    5,115.64x = 29,775,632.97
  5. Step 5: Solve for x
    x = 29,775,632.97/5,115.64
  6. Step 6: Final answer
    x = 5,820.51

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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.