Home / 5,115.51-7,687.89-4,768.83

Finding the Fourth Proportional to 5,115.51, 7,687.89 and 4,768.83

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Solution

The fourth proportional to 5,115.51, 7,687.89 and 4,768.83 is: 7,166.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.51 : 7,687.89 = 4,768.83 : x
  2. Step 2: Convert to fraction form
    5,115.51/7,687.89 = 4,768.83/x
  3. Step 3: Cross multiply
    5,115.51x = 7,687.89 × 4,768.83
  4. Step 4: Simplify right side
    5,115.51x = 36,662,240.47
  5. Step 5: Solve for x
    x = 36,662,240.47/5,115.51
  6. Step 6: Final answer
    x = 7,166.88

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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.