Home / 5,139.84-7,695.44-3,286.38

Finding the Fourth Proportional to 5,139.84, 7,695.44 and 3,286.38

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Solution

The fourth proportional to 5,139.84, 7,695.44 and 3,286.38 is: 4,920.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.84 : 7,695.44 = 3,286.38 : x
  2. Step 2: Convert to fraction form
    5,139.84/7,695.44 = 3,286.38/x
  3. Step 3: Cross multiply
    5,139.84x = 7,695.44 × 3,286.38
  4. Step 4: Simplify right side
    5,139.84x = 25,290,140.11
  5. Step 5: Solve for x
    x = 25,290,140.11/5,139.84
  6. Step 6: Final answer
    x = 4,920.41

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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.