Home / 5,079.66-7,619.64-1,381.87

Finding the Fourth Proportional to 5,079.66, 7,619.64 and 1,381.87

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Solution

The fourth proportional to 5,079.66, 7,619.64 and 1,381.87 is: 2,072.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,079.66 : 7,619.64 = 1,381.87 : x
  2. Step 2: Convert to fraction form
    5,079.66/7,619.64 = 1,381.87/x
  3. Step 3: Cross multiply
    5,079.66x = 7,619.64 × 1,381.87
  4. Step 4: Simplify right side
    5,079.66x = 10,529,351.93
  5. Step 5: Solve for x
    x = 10,529,351.93/5,079.66
  6. Step 6: Final answer
    x = 2,072.85

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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.