Home / 3,835.38-5,292.79-2,156.79

Finding the Fourth Proportional to 3,835.38, 5,292.79 and 2,156.79

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Solution

The fourth proportional to 3,835.38, 5,292.79 and 2,156.79 is: 2,976.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,835.38 : 5,292.79 = 2,156.79 : x
  2. Step 2: Convert to fraction form
    3,835.38/5,292.79 = 2,156.79/x
  3. Step 3: Cross multiply
    3,835.38x = 5,292.79 × 2,156.79
  4. Step 4: Simplify right side
    3,835.38x = 11,415,436.54
  5. Step 5: Solve for x
    x = 11,415,436.54/3,835.38
  6. Step 6: Final answer
    x = 2,976.35

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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.