Home / 5,178.42-7,761.87-2,057.61

Finding the Fourth Proportional to 5,178.42, 7,761.87 and 2,057.61

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Solution

The fourth proportional to 5,178.42, 7,761.87 and 2,057.61 is: 3,084.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.42 : 7,761.87 = 2,057.61 : x
  2. Step 2: Convert to fraction form
    5,178.42/7,761.87 = 2,057.61/x
  3. Step 3: Cross multiply
    5,178.42x = 7,761.87 × 2,057.61
  4. Step 4: Simplify right side
    5,178.42x = 15,970,901.33
  5. Step 5: Solve for x
    x = 15,970,901.33/5,178.42
  6. Step 6: Final answer
    x = 3,084.13

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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.