Home / 2,789.92-3,867.96-2,634.40

Finding the Fourth Proportional to 2,789.92, 3,867.96 and 2,634.40

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Solution

The fourth proportional to 2,789.92, 3,867.96 and 2,634.40 is: 3,652.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.92 : 3,867.96 = 2,634.40 : x
  2. Step 2: Convert to fraction form
    2,789.92/3,867.96 = 2,634.40/x
  3. Step 3: Cross multiply
    2,789.92x = 3,867.96 × 2,634.40
  4. Step 4: Simplify right side
    2,789.92x = 10,189,753.82
  5. Step 5: Solve for x
    x = 10,189,753.82/2,789.92
  6. Step 6: Final answer
    x = 3,652.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.