Home / 5,079.26-7,619.27-1,381.78

Finding the Fourth Proportional to 5,079.26, 7,619.27 and 1,381.78

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Solution

The fourth proportional to 5,079.26, 7,619.27 and 1,381.78 is: 2,072.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,079.26 : 7,619.27 = 1,381.78 : x
  2. Step 2: Convert to fraction form
    5,079.26/7,619.27 = 1,381.78/x
  3. Step 3: Cross multiply
    5,079.26x = 7,619.27 × 1,381.78
  4. Step 4: Simplify right side
    5,079.26x = 10,528,154.90
  5. Step 5: Solve for x
    x = 10,528,154.90/5,079.26
  6. Step 6: Final answer
    x = 2,072.77

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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.