Home / 3,928.09-5,419.68-2,531.65

Finding the Fourth Proportional to 3,928.09, 5,419.68 and 2,531.65

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Solution

The fourth proportional to 3,928.09, 5,419.68 and 2,531.65 is: 3,492.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.09 : 5,419.68 = 2,531.65 : x
  2. Step 2: Convert to fraction form
    3,928.09/5,419.68 = 2,531.65/x
  3. Step 3: Cross multiply
    3,928.09x = 5,419.68 × 2,531.65
  4. Step 4: Simplify right side
    3,928.09x = 13,720,732.87
  5. Step 5: Solve for x
    x = 13,720,732.87/3,928.09
  6. Step 6: Final answer
    x = 3,492.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.