Home / 4,078.75-5,628.68-2,215.75

Finding the Fourth Proportional to 4,078.75, 5,628.68 and 2,215.75

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Solution

The fourth proportional to 4,078.75, 5,628.68 and 2,215.75 is: 3,057.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,078.75 : 5,628.68 = 2,215.75 : x
  2. Step 2: Convert to fraction form
    4,078.75/5,628.68 = 2,215.75/x
  3. Step 3: Cross multiply
    4,078.75x = 5,628.68 × 2,215.75
  4. Step 4: Simplify right side
    4,078.75x = 12,471,747.71
  5. Step 5: Solve for x
    x = 12,471,747.71/4,078.75
  6. Step 6: Final answer
    x = 3,057.74

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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.