Home / 4,078.40-5,619.78-3,134.14

Finding the Fourth Proportional to 4,078.40, 5,619.78 and 3,134.14

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Solution

The fourth proportional to 4,078.40, 5,619.78 and 3,134.14 is: 4,318.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,078.40 : 5,619.78 = 3,134.14 : x
  2. Step 2: Convert to fraction form
    4,078.40/5,619.78 = 3,134.14/x
  3. Step 3: Cross multiply
    4,078.40x = 5,619.78 × 3,134.14
  4. Step 4: Simplify right side
    4,078.40x = 17,613,163.24
  5. Step 5: Solve for x
    x = 17,613,163.24/4,078.40
  6. Step 6: Final answer
    x = 4,318.65

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1.5x scale

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.