Home / 2,789.91-3,850.54-2,125.51

Finding the Fourth Proportional to 2,789.91, 3,850.54 and 2,125.51

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Solution

The fourth proportional to 2,789.91, 3,850.54 and 2,125.51 is: 2,933.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.91 : 3,850.54 = 2,125.51 : x
  2. Step 2: Convert to fraction form
    2,789.91/3,850.54 = 2,125.51/x
  3. Step 3: Cross multiply
    2,789.91x = 3,850.54 × 2,125.51
  4. Step 4: Simplify right side
    2,789.91x = 8,184,346.34
  5. Step 5: Solve for x
    x = 8,184,346.34/2,789.91
  6. Step 6: Final answer
    x = 2,933.55

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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.