Home / 2,860.38-4,286.93-1,378.69

Finding the Fourth Proportional to 2,860.38, 4,286.93 and 1,378.69

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Solution

The fourth proportional to 2,860.38, 4,286.93 and 1,378.69 is: 2,066.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.38 : 4,286.93 = 1,378.69 : x
  2. Step 2: Convert to fraction form
    2,860.38/4,286.93 = 1,378.69/x
  3. Step 3: Cross multiply
    2,860.38x = 4,286.93 × 1,378.69
  4. Step 4: Simplify right side
    2,860.38x = 5,910,329.91
  5. Step 5: Solve for x
    x = 5,910,329.91/2,860.38
  6. Step 6: Final answer
    x = 2,066.27

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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.